diff --git a/src/activities/lightsoff/ActivityInfo.qml b/src/activities/lightsoff/ActivityInfo.qml
index dbaa59f07..3e39f6bdb 100644
--- a/src/activities/lightsoff/ActivityInfo.qml
+++ b/src/activities/lightsoff/ActivityInfo.qml
@@ -1,39 +1,40 @@
 /* GCompris - ActivityInfo.qml
  *
  * Copyright (C) 2015 Stephane Mankowski <stephane@mankowski.fr>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, see <https://www.gnu.org/licenses/>.
  */
 import GCompris 1.0
 
 ActivityInfo {
   name: "lightsoff/Lightsoff.qml"
   difficulty: 6
   icon: "lightsoff/lightsoff.svg"
   author: "Stephane Mankowski &lt;stephane@mankowski.fr&gt;"
   //: Activity title
   title: qsTr("Lights Off")
   //: Help title
   description: qsTr("The aim is to switch off all the lights.")
 //  intro: "Click on the lamps to turn them off."
   //: Help goal
   goal: qsTr("The aim is to switch off all the lights.")
   //: Help prerequisite
   prerequisite: ""
   //: Help manual
   manual: qsTr("The effect of pressing a window is to toggle the state of that window, and of its immediate vertical and horizontal neighbors. The sun and the color of the sky depend on the number of clicks needed to solve the puzzle. If you click on Tux, the solution is shown.")
   credit: qsTr("The solver algorithm is described on Wikipedia. To know more about the Lights Off game: &lt;https://en.wikipedia.org/wiki/Lights_Out_(game)&gt;")
   section: "discovery logic"
   createdInVersion: 0
+  levels: "1,2,3,4,5,6,7,8,9"
 }
diff --git a/src/activities/lightsoff/Lightsoff.qml b/src/activities/lightsoff/Lightsoff.qml
index 51155a231..f2a7378fd 100644
--- a/src/activities/lightsoff/Lightsoff.qml
+++ b/src/activities/lightsoff/Lightsoff.qml
@@ -1,249 +1,273 @@
 /* GCompris - lightsoff.qml
 *
 * Copyright (C) 2014 Stephane Mankowski <stephane@mankowski.fr>
 *
 * Authors:
 *   Bruno Coudoin <bruno.coudoin@gcompris.net> (GTK+ version)
 *   Stephane Mankowski <stephane@mankowski.fr> (Qt Quick port)
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, see <https://www.gnu.org/licenses/>.
 */
 import QtQuick 2.6
+import GCompris 1.0
 
 import "../../core"
 import "lightsoff.js" as Activity
 
 ActivityBase {
     id: activity
 
     onStart: focus = true
     onStop: {
 
     }
 
     pageComponent: Rectangle {
         id: background
         color: "blue"
         anchors.fill: parent
         signal start
         signal stop
 
         property bool keyNavigationVisible: false
 
         Component.onCompleted: {
+            dialogActivityConfig.initialize()
             activity.start.connect(start)
             activity.stop.connect(stop)
         }
 
         // Add here the QML items you need to access in javascript
         QtObject {
             id: items
             property Item main: activity.main
             property alias background: background
             property alias bar: bar
             property alias bonus: bonus
             property alias skyColor: background.color
             property alias modelTable: modelTable
+            property var levels: activity.datasetLoader.data
             property bool blockClicks: false
             property int nbCell: 5
             property int cellSize: Math.min(
                                        (parent.height - 200) / items.nbCell,
                                        (parent.width - 40) / items.nbCell)
             property int nbCelToWin: 0
         }
 
         onStart: {
             Activity.start(items)
         }
         onStop: {
             Activity.stop()
         }
 
         Keys.enabled: !items.blockClicks
         Keys.onPressed: {
             background.keyNavigationVisible = true
             if (event.key === Qt.Key_Left)
                 grid.moveCurrentIndexLeft()
             if (event.key === Qt.Key_Right)
                 grid.moveCurrentIndexRight()
             if (event.key === Qt.Key_Down)
                 grid.moveCurrentIndexDown()
             if (event.key === Qt.Key_Up)
                 grid.moveCurrentIndexUp()
             if (event.key === Qt.Key_Space || event.key === Qt.Key_Enter || event.key === Qt.Key_Return)
                 Activity.windowPressed(grid.currentIndex)
         }
 
         /* The background picture */
         Image {
             source: Activity.url + "back.svg"
             anchors.bottom: parent.bottom
             fillMode: Image.TileHorizontally
             sourceSize.height: (parent.height - (gridarea.y + gridarea.height)) * 1.2
             z: 2
         }
         Image {
             source: Activity.url + "building.svg"
             fillMode: Image.PreserveAspectFit
             anchors.fill: gridarea
             anchors.margins: -1 * Math.ceil(items.nbCell / 2) * items.cellSize
             z: 2
         }
         Image {
             source: Activity.url + "front.svg"
             anchors.bottom: parent.bottom
             fillMode: Image.TileHorizontally
             sourceSize.height: 20 + tux.height * 0.5
             z: 999
         }
 
         /* The sun */
         Image {
             id: sun
             source: Activity.url + "sun.svg"
             sourceSize.height: items.cellSize * 2 * items.nbCell / 5
             anchors {
                 left: parent.left
                 leftMargin: 10
                 bottom: parent.bottom
                 bottomMargin: parent.height / 3 + 2 / 3 * parent.height
                               * items.nbCelToWin / (items.nbCell * items.nbCell)
             }
             z: 1
             Behavior on anchors.bottomMargin {
                 PropertyAnimation {
                     duration: 1000
                 }
             }
         }
 
         /* Tux */
         BarButton {
             id: tux
             fillMode: Image.PreserveAspectFit
             source: Activity.url + "tux.svg"
             sourceSize.width: parent.width - grid.width < 200 ?
                                   bar.height * 1.2 :
                                   Math.min((parent.width - grid.width - 40) / 2, 150)
             z: 3
             visible: true
             anchors {
                 right: parent.right
                 rightMargin: 20
                 bottom: parent.bottom
                 bottomMargin: 20
             }
             onClicked: Activity.solve()
         }
 
         /* The grid */
         Rectangle {
             id: gridarea
             anchors.fill: grid
             anchors.margins: items.cellSize / -10
             opacity: 0
             z: 4
         }
 
         GridView {
             id: grid
             anchors.top: parent.top
             anchors.topMargin: (parent.height - height) / 6
             anchors.horizontalCenter: parent.horizontalCenter
             width: items.nbCell * items.cellSize
             height: width
             cellWidth: items.cellSize
             cellHeight: items.cellSize
             z: 5
 
             ListModel {
                 id: modelTable
             }
 
             model: modelTable
 
             delegate: Rectangle {
                 color: "transparent"
                 height: items.cellSize
                 width: items.cellSize
                 border {
                     color: soluce === 1 ? "red" : "transparent"
                     width: items.cellSize / 40
                 }
                 radius: items.cellSize / 10
 
                 BarButton {
                     anchors.fill: parent
                     fillMode: Image.PreserveAspectFit
                     source: Activity.url + "off.svg"
                     sourceSize.height: items.cellSize
                     mouseArea.hoverEnabled: !items.blockClicks
                     mouseArea.enabled: !items.blockClicks
                     onClicked: Activity.windowPressed(index)
                     visible: true
                     Image {
                         anchors.fill: parent
                         fillMode: Image.PreserveAspectFit
                         source: Activity.url + "on.svg"
                         opacity: lighton === 1 ? 1 : 0
                         sourceSize.height: items.cellSize
                         Behavior on opacity {
                             PropertyAnimation {
                                 duration: 200
                             }
                         }
                     }
                 }
             }
             
             interactive: false
             keyNavigationWraps: true
             highlightFollowsCurrentItem: true
             highlight: Rectangle {
                 width: items.cellSize
                 height: items.cellSize
                 color: "#AAFFFFFF"
                 radius: items.cellSize / 10
                 visible: background.keyNavigationVisible
                 Behavior on x { SpringAnimation { spring: 2; damping: 0.2 } }
                 Behavior on y { SpringAnimation { spring: 2; damping: 0.2 } }
             }
         }
 
         DialogHelp {
             id: dialogHelp
             onClose: home()
         }
 
+        DialogChooseLevel {
+            id: dialogActivityConfig
+            currentActivity: activity.activityInfo
+
+            onSaveData: {
+                levelFolder = dialogActivityConfig.chosenLevels
+                currentActivity.currentLevels = dialogActivityConfig.chosenLevels
+                ApplicationSettings.setCurrentLevels(currentActivity.name, dialogActivityConfig.chosenLevels)
+            }
+            onClose: {
+                home()
+            }
+            onStartActivity: {
+                background.stop()
+                background.start()
+            }
+        }
+
         Bar {
             id: bar
             content: BarEnumContent {
-                value: help | home | level | reload
+                value: help | home | level | reload | activityConfig
             }
             onHelpClicked: {
                 displayDialog(dialogHelp)
             }
             onPreviousLevelClicked: Activity.previousLevel()
             onNextLevelClicked: Activity.nextLevel()
             onHomeClicked: activity.home()
             onReloadClicked: Activity.initLevel()
+            onActivityConfigClicked: {
+                displayDialog(dialogActivityConfig)
+            }
         }
 
         Bonus {
             id: bonus
             onStop: items.blockClicks = false
             Component.onCompleted: win.connect(Activity.nextLevel)
         }
     }
 }
diff --git a/src/activities/lightsoff/lightsoff.js b/src/activities/lightsoff/lightsoff.js
index 2df2d3aaa..5812af1a4 100644
--- a/src/activities/lightsoff/lightsoff.js
+++ b/src/activities/lightsoff/lightsoff.js
@@ -1,268 +1,155 @@
 /* GCompris - lightsoff.js
 *
 * Copyright (C) 2014 Stephane Mankowski <stephane@mankowski.fr>
 *
 * Authors:
 *   Bruno Coudoin <bruno.coudoin@gcompris.net> (GTK+ version)
 *   Stephane Mankowski <stephane@mankowski.fr> (Qt Quick port)
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, see <https://www.gnu.org/licenses/>.
 */
-var levels = [[0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0], // 1
-              [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], // 1 soluce
-              [1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], // 2
-              [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0], // 2 soluce
-              [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0], // 3
-              [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0], // 3 soluce
-              [1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1], // 4
-              [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0], // 4 soluce
-              [0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0], // 5
-              [0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0], // 5 soluce
-              [1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1], // 6
-              [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1], // 6 soluce
-              [0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1], // 7
-              [0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1], // 7 soluce
-              [1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0], // 8
-              [0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1], // 8 soluce
-              [1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0], // 9
-              [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0], // 9 soluce
-              [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], // 10
-              [1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1], // 10 soluce
-              [0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0], // 11
-              [1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1], // 11 soluce
-              [0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0], // 12
-              [1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0], // 12 soluce
-              [0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0], // 13
-              [0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0], // 13 soluce
-              [1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1], // 14
-              [0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0], // 14 soluce
-              [1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1], // 15
-              [1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1], // 15 soluce
-              [1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1], // 16
-              [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1], // 16 soluce
-              [0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0], // 17
-              [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0], // 17 soluce
-              [1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1], // 18
-              [1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1], // 18 soluce
-              [1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1], // 19
-              [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1], // 19 soluce
-              [1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1], // 20
-              [0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0], // 20 soluce
-              [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], // 21
-              [0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0], // 21 soluce
-              [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1], // 22
-              [1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0], // 22 soluce
-              [1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1], // 23
-              [0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1], // 23 soluce
-              [1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1], // 24
-              [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1], // 24 soluce
-              [1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1], // 25
-              [1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0], // 25 soluce
-              [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1], // 26
-              [0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0], // 26 soluce
-              [1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1], // 27
-              [0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1], // 27 soluce
-              [1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1], // 28
-              [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1], // 28 soluce
-              [0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0], // 29
-              [0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0], // 29 soluce
-              [0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0], // 30
-              [1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0], // 30 soluce
-              [0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1], // 31
-              [1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1], // 31 soluce
-              [1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1], // 32
-              [1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1], // 32 soluce
-              [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1], // 33
-              [0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0], // 33 soluce
-              [0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0], // 34
-              [1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0], // 34 soluce
-              [0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1], // 35
-              [1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0], // 35 soluce
-              [1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1], // 36
-              [1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0], // 36 soluce
-              [0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0], // 37
-              [0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1], // 37 soluce
-              [0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0], // 38
-              [0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1], // 38 soluce
-              [1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0], // 39
-              [1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1], // 39 soluce
-              [1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0], // 40
-              [0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0], // 40 soluce
-              [1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0], // 41
-              [0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0], // 41 soluce
-              [0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0], // 42
-              [1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0], // 42 soluce
-              [0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0], // 43
-              [1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0], // 43 soluce
-              [0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1], // 44
-              [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0], // 44 soluce
-              [0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0], // 45
-              [0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1], // 45 soluce
-              [1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1], // 46
-              [0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1], // 46 soluce
-              [1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1], // 47
-              [0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1], // 47 soluce
-              [0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1], // 48
-              [1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1], // 48 soluce
-              [0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0], // 49
-              [0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0], // 49 soluce
-              [0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0], // 50
-              [1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0], // 50 soluce
-              [0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0], // 51
-              [0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1], // 51 soluce
-              [1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0], // 52
-              [1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1], // 52 soluce
-              [1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1], // 53
-              [0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0], // 53 soluce
-              [1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1], // 54
-              [1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1], // 54 soluce
-              [1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0], // 55
-              [0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0], // 55 soluce
-              [0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0], // 56
-              [0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0], // 56 soluce
-              [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0], // 57
-              [1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0]] // 57 soluce
-
+var levels
 var currentLevel = 0
-var numberOfLevel = 100
+var numberOfLevel
 var items
 var table
 var soluc
 var showSoluce = false
 var size = 5
 
 var url = "qrc:/gcompris/src/activities/lightsoff/resource/"
 
 function start(items_) {
     items = items_
     currentLevel = 0
+    numberOfLevel = items.levels.length
     initLevel()
 }
 
 function stop() {}
 
 function initLevel() {
     items.bar.level = currentLevel + 1
 
     /* Is it a static or dynamic level ? */
-    if (currentLevel >= levels.length / 2) {
+    if (items.levels[currentLevel].dynamic) {
         /* Dynamic */
-        size=Math.min(Math.floor((currentLevel+1)/10), 9)
+        size = items.levels[currentLevel].size
         table = new Array(size * size)
         soluc = new Array(size * size)
         for (var i = 0; i < size * size; ++i) {
             table[i] = 0
             soluc[i] = 0
         }
 
         for (var j = 0; j < currentLevel; ++j) {
             switchLightNoCheck(Math.floor(size * size * Math.random()))
         }
     } else {
         /* Static */
-        size = 5
-        table = levels[currentLevel * 2].slice(0)
-        soluc = levels[currentLevel * 2 + 1].slice(0)
+        size = items.levels[currentLevel].size
+        table = items.levels[currentLevel].level.slice(0)
+        soluc = items.levels[currentLevel].solution.slice(0)
     }
     showSoluce = false
     items.modelTable.clear()
     items.nbCell = size
     refreshModel()
     checkResult()
 }
 
 function nextLevel() {
     if (numberOfLevel <= ++currentLevel) {
         currentLevel = 0
     }
     initLevel()
 }
 
 function previousLevel() {
     if (--currentLevel < 0) {
         currentLevel = numberOfLevel - 1
     }
     initLevel()
 }
 
 function switchLightNoCheck(index) {
     /* Switch the selected item */
     table[index] = 1 - table[index]
 
-    /* Swith the soluce */
+    /* Switch the soluce */
     soluc[index] = 1 - soluc[index]
 
     /* Switch neighbor left */
     if (index % size !== 0)
         table[index - 1] = 1 - table[index - 1]
 
     /* Switch neighbor right */
     if (index % size !== size - 1)
         table[index + 1] = 1 - table[index + 1]
 
     /* Switch neighbor up */
     if (index > size - 1)
         table[index - size] = 1 - table[index - size]
 
     /* Switch neighbor down */
     if (index < size * size -size)
         table[index + size] = 1 - table[index + size]
 }
 
 function refreshModel() {
     for (var i = 0; i < size * size; ++i) {
         items.modelTable.set(i, { 'lighton': table[i],  'soluce': showSoluce ? soluc[i] : 0})
     }
 }
 
 function switchLight(index) {
     /* Switch the selected item */
     switchLightNoCheck(index)
 
     /* Refresh the lights */
     refreshModel()
 
     /* Check the result */
     checkResult()
 }
 
 function checkResult() {
     /* Check the result */
     var nb = 0
     table.forEach(function (entry) {
         nb += entry
     })
 
     if (nb === 0) {
-        items.blockClicks  = true
+        items.blockClicks = true
         items.bonus.good("tux")
     }
 
     /* Check the soluce */
     items.nbCelToWin = nb
     items.skyColor = Qt.rgba(0, (127 - 127 * (size * size - nb) / (size * size)) / 255,
                              (255 - 255 * (size * size - nb) / (size * size)) / 255, 1)
 }
 
 function solve() {
     showSoluce = !showSoluce
 
     /* Refresh the lights */
     refreshModel()
 }
 
 function windowPressed(index) {
     audioEffects.play('qrc:/gcompris/src/core/resource/sounds/scroll.wav')
     switchLight(index)
 }
diff --git a/src/activities/lightsoff/resource/1/Data.qml b/src/activities/lightsoff/resource/1/Data.qml
new file mode 100644
index 000000000..7c2fca421
--- /dev/null
+++ b/src/activities/lightsoff/resource/1/Data.qml
@@ -0,0 +1,58 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("5*5 grids, Very easy")
+    difficulty: 3
+    data: [
+        { // 1
+            "size": 5,
+            "level": [0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0],
+            "solution": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+        },
+        { // 2
+            "size": 5,
+            "level": [1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+            "solution": [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
+        },
+        { // 3
+            "size": 5,
+            "level": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0],
+            "solution": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0]
+        },
+        { // 4
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1],
+            "solution": [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0]
+        },
+        { // 5
+            "size": 5,
+            "level": [0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0],
+            "solution": [0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0]
+        },
+        { // 6
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1],
+            "solution": [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1]
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/2/Data.qml b/src/activities/lightsoff/resource/2/Data.qml
new file mode 100644
index 000000000..1926d9c4d
--- /dev/null
+++ b/src/activities/lightsoff/resource/2/Data.qml
@@ -0,0 +1,58 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("5*5 grids, Easy")
+    difficulty: 4
+    data: [
+        { // 1
+            "size": 5,
+            "level": [0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1],
+            "solution": [0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1]
+        },
+        { // 2
+            "size": 5,
+            "level": [1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0],
+            "solution": [0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1]
+        },
+        { // 3
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0],
+            "solution": [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0]
+        },
+        { // 4
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1],
+            "solution": [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1]
+        },
+        { // 5
+            "size": 5,
+            "level": [0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0],
+            "solution": [0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0]
+        },
+        { // 6
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0],
+            "solution": [0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0]
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/3/Data.qml b/src/activities/lightsoff/resource/3/Data.qml
new file mode 100644
index 000000000..f05872f3e
--- /dev/null
+++ b/src/activities/lightsoff/resource/3/Data.qml
@@ -0,0 +1,88 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("5*5 grids, Medium")
+    difficulty: 5
+    data: [
+        { // 1
+            "size": 5,
+            "level": [0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0],
+            "solution": [1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0]
+        },
+        { // 2
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1],
+            "solution": [0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1]
+        },
+        { // 3
+            "size": 5,
+            "level": [0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0],
+            "solution": [0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1]
+        },
+        { // 4
+            "size": 5,
+            "level": [1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1],
+            "solution": [0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0]
+        },
+        { // 5
+            "size": 5,
+            "level": [1, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0],
+            "solution": [0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0]
+        },
+        { // 6
+            "size": 5,
+            "level": [1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1],
+            "solution": [0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1]
+        },
+        { // 7
+            "size": 5,
+            "level": [0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1],
+            "solution": [1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1],
+        },
+        { // 8
+            "size": 5,
+            "level": [1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1],
+            "solution": [1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1]
+        },
+        { // 9
+            "size": 5,
+            "level": [0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0],
+            "solution": [0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1]
+        },
+        { // 10
+            "size": 5,
+            "level": [0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 0],
+            "solution": [1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0]
+        },
+        { // 11
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1],
+            "solution": [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1]
+        },
+        { // 12
+            "size": 5,
+            "level": [0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0],
+            "solution": [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0]
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/4/Data.qml b/src/activities/lightsoff/resource/4/Data.qml
new file mode 100644
index 000000000..b426252c5
--- /dev/null
+++ b/src/activities/lightsoff/resource/4/Data.qml
@@ -0,0 +1,118 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("5*5 grids, Difficult")
+    difficulty: 5
+    data: [
+        { // 1
+            "size": 5,
+            "level": [1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1],
+            "solution": [0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 0]
+        },
+        { // 2
+            "size": 5,
+            "level": [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1],
+            "solution": [1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0]
+        },
+        { // 3
+            "size": 5,
+            "level": [0, 0, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0],
+            "solution": [1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0]
+        },
+        { // 4
+            "size": 5,
+            "level": [0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 1],
+            "solution": [1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0]
+        },
+        { // 5
+            "size": 5,
+            "level": [1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0],
+            "solution": [1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1]
+        },
+        { // 6
+            "size": 5,
+            "level": [0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 1, 1],
+            "solution": [1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 1]
+        },
+        { // 7
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0],
+            "solution": [1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0]
+        },
+        { // 8
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1],
+            "solution": [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1]
+        },
+        { // 9
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1],
+            "solution": [1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0]
+        },
+        { // 10
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1],
+            "solution": [1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1]
+        },
+        { // 11
+            "size": 5,
+            "level": [0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0],
+            "solution": [0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0]
+        },
+        { // 12
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0],
+            "solution": [0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0]
+        },
+        { // 13
+            "size": 5,
+            "level": [0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1],
+            "solution": [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0]
+        },
+        { // 14
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 1],
+            "solution": [0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1, 1]
+        },
+        { // 15
+            "size": 5,
+            "level": [1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0],
+            "solution": [1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1]
+        },
+        { // 16
+            "size": 5,
+            "level": [0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 0],
+            "solution": [0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 0]
+        },
+        { // 17
+            "size": 5,
+            "level": [0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0],
+            "solution": [1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1]
+        },
+        { // 18
+            "size": 5,
+            "level": [0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0],
+            "solution": [1, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0]
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/5/Data.qml b/src/activities/lightsoff/resource/5/Data.qml
new file mode 100644
index 000000000..b7e091d49
--- /dev/null
+++ b/src/activities/lightsoff/resource/5/Data.qml
@@ -0,0 +1,111 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("5*5 grids, Very Difficult")
+    difficulty: 6
+    data: [
+        { // 1
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1],
+            "solution": [0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0]
+        },
+        { // 2
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+            "solution": [0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0]
+        },
+        { // 3
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 1],
+            "solution": [0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0]
+        },
+        { // 4
+            "size": 5,
+            "level": [0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0],
+            "solution": [1, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 0]
+        },
+        { // 5
+            "size": 5,
+            "level": [1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1],
+            "solution": [1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0]
+        },
+        { // 6
+            "size": 5,
+            "level": [0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 0],
+            "solution": [0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 1]
+        },
+        { // 7
+            "size": 5,
+            "level": [0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 1, 0],
+            "solution": [1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 0, 0]
+        },
+        { // 8
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1],
+            "solution": [1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1]
+        },
+        { // 9
+            "size": 5,
+            "level": [0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0],
+            "solution": [0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0]
+        },
+        { // 10
+            "size": 5,
+            "level": [1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1],
+            "solution": [0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0]
+        },
+        { // 11
+            "size": 5,
+            "level": [0, 1, 1, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0],
+            "solution": [0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1]
+        },
+        { // 12
+            "size": 5,
+            "level": [1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1],
+            "solution": [0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1]
+        },
+        { // 13
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+            "solution": [1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1]
+        },
+        { // 14
+            "size": 5,
+            "level": [1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1],
+            "solution": [1, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1]
+        },
+        { // 15
+            "size": 5,
+            "level": [1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1],
+            "solution": [1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 1]
+        },
+        { // 16
+            "size": 5,
+            "dynamic": true
+        },
+        { // 17
+            "size": 5,
+            "dynamic": true
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/6/Data.qml b/src/activities/lightsoff/resource/6/Data.qml
new file mode 100644
index 000000000..961b8581a
--- /dev/null
+++ b/src/activities/lightsoff/resource/6/Data.qml
@@ -0,0 +1,68 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("6*6 grids, Very Difficult")
+    difficulty: 6
+    data: [
+        { // 1
+            "size": 6,
+            "dynamic": true
+        },
+        { // 2
+            "size": 6,
+            "dynamic": true
+        },
+        { // 3
+            "size": 6,
+            "dynamic": true
+        },
+        { // 4
+            "size": 6,
+            "dynamic": true
+        },
+        { // 5
+            "size": 6,
+            "dynamic": true
+        },
+        { // 6
+            "size": 6,
+            "dynamic": true
+        },
+        { // 7
+            "size": 6,
+            "dynamic": true
+        },
+        { // 8
+            "size": 6,
+            "dynamic": true
+        },
+        { // 9
+            "size": 6,
+            "dynamic": true
+        },
+        { // 10
+            "size": 6,
+            "dynamic": true
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/7/Data.qml b/src/activities/lightsoff/resource/7/Data.qml
new file mode 100644
index 000000000..8300ea6d7
--- /dev/null
+++ b/src/activities/lightsoff/resource/7/Data.qml
@@ -0,0 +1,68 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("7*7 grids, Very Difficult")
+    difficulty: 6
+    data: [
+        { // 1
+            "size": 7,
+            "dynamic": true
+        },
+        { // 2
+            "size": 7,
+            "dynamic": true
+        },
+        { // 3
+            "size": 7,
+            "dynamic": true
+        },
+        { // 4
+            "size": 7,
+            "dynamic": true
+        },
+        { // 5
+            "size": 7,
+            "dynamic": true
+        },
+        { // 6
+            "size": 7,
+            "dynamic": true
+        },
+        { // 7
+            "size": 7,
+            "dynamic": true
+        },
+        { // 8
+            "size": 7,
+            "dynamic": true
+        },
+        { // 9
+            "size": 7,
+            "dynamic": true
+        },
+        { // 10
+            "size": 7,
+            "dynamic": true
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/8/Data.qml b/src/activities/lightsoff/resource/8/Data.qml
new file mode 100644
index 000000000..d8c094f00
--- /dev/null
+++ b/src/activities/lightsoff/resource/8/Data.qml
@@ -0,0 +1,68 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("8*8 grids, Very Difficult")
+    difficulty: 6
+    data: [
+        { // 1
+            "size": 8,
+            "dynamic": true
+        },
+        { // 2
+            "size": 8,
+            "dynamic": true
+        },
+        { // 3
+            "size": 8,
+            "dynamic": true
+        },
+        { // 4
+            "size": 8,
+            "dynamic": true
+        },
+        { // 5
+            "size": 8,
+            "dynamic": true
+        },
+        { // 6
+            "size": 8,
+            "dynamic": true
+        },
+        { // 7
+            "size": 8,
+            "dynamic": true
+        },
+        { // 8
+            "size": 8,
+            "dynamic": true
+        },
+        { // 9
+            "size": 8,
+            "dynamic": true
+        },
+        { // 10
+            "size": 8,
+            "dynamic": true
+        }
+    ]
+}
diff --git a/src/activities/lightsoff/resource/9/Data.qml b/src/activities/lightsoff/resource/9/Data.qml
new file mode 100644
index 000000000..d37f8feff
--- /dev/null
+++ b/src/activities/lightsoff/resource/9/Data.qml
@@ -0,0 +1,68 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Johnny Jazeix <jazeix@gmail.com>
+ *
+ * Authors:
+ *   Johnny Jazeix <jazeix@gmail.com>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+import GCompris 1.0
+
+Data {
+    objective: qsTr("9*9 grids, Very Difficult")
+    difficulty: 6
+    data: [
+        { // 1
+            "size": 9,
+            "dynamic": true
+        },
+        { // 2
+            "size": 9,
+            "dynamic": true
+        },
+        { // 3
+            "size": 9,
+            "dynamic": true
+        },
+        { // 4
+            "size": 9,
+            "dynamic": true
+        },
+        { // 5
+            "size": 9,
+            "dynamic": true
+        },
+        { // 6
+            "size": 9,
+            "dynamic": true
+        },
+        { // 7
+            "size": 9,
+            "dynamic": true
+        },
+        { // 8
+            "size": 9,
+            "dynamic": true
+        },
+        { // 9
+            "size": 9,
+            "dynamic": true
+        },
+        { // 10
+            "size": 9,
+            "dynamic": true
+        }
+    ]
+}