diff --git a/src/activities/clockgame/ActivityInfo.qml b/src/activities/clockgame/ActivityInfo.qml
--- a/src/activities/clockgame/ActivityInfo.qml
+++ b/src/activities/clockgame/ActivityInfo.qml
@@ -37,5 +37,5 @@
   credit: ""
   section: "math measures"
   createdInVersion: 0
-  levels: "1,2"
+  levels: "1,2,3,4,5"
 }
diff --git a/src/activities/clockgame/Clockgame.qml b/src/activities/clockgame/Clockgame.qml
--- a/src/activities/clockgame/Clockgame.qml
+++ b/src/activities/clockgame/Clockgame.qml
@@ -77,6 +77,7 @@
         }
 
         Score {
+            id: score
             anchors {
                 bottom: bar.top
                 bottomMargin: 10 * ApplicationInfo.ratio
@@ -420,16 +421,6 @@
                     }
                 }
 
-                onReleased: {
-                    Activity.selectedArrow = null
-                    //todo replace this with Ok button
-                    if (items.currentH === items.targetH
-                            && items.currentM === items.targetM
-                            && items.currentS === items.targetS) {
-                        items.bonus.good("gnu")
-                    }
-                }
-
                 onMouseXChanged: {
                     /* Move */
                     if (Activity.selectedArrow !== null) {
@@ -464,6 +455,27 @@
             }
         }
 
+        BarButton {
+            id: okButton
+            source: "qrc:/gcompris/src/core/resource/bar_ok.svg"
+            sourceSize.width: 60 * ApplicationInfo.ratio
+            anchors.bottom: bar.top
+            anchors.bottomMargin: parent.width * 0.03
+            anchors.left: score.right
+            anchors.leftMargin: parent.width * 0.05
+            ParticleSystemStarLoader {
+                id: okButtonParticles
+                clip: false
+            }
+            MouseArea {
+                id: okButtonMouseArea
+                anchors.fill: parent
+                onClicked: {
+                    Activity.checkAnswer()
+                }
+            }
+        }
+
         DialogChooseLevel {
             id: dialogActivityConfig
             currentActivity: activity.activityInfo
diff --git a/src/activities/clockgame/clockgame.js b/src/activities/clockgame/clockgame.js
--- a/src/activities/clockgame/clockgame.js
+++ b/src/activities/clockgame/clockgame.js
@@ -84,6 +84,17 @@
     }
 }
 
+function checkAnswer() {
+    if (items.currentH === items.targetH
+            && items.currentM === items.targetM
+            && items.currentS === items.targetS) {
+        items.bonus.good("gnu")
+    }
+    else {
+        items.bonus.bad("gnu")
+    }
+}
+
 function nextLevel() {
     if (numberOfLevel <= ++currentLevel) {
         currentLevel = 0
diff --git a/src/activities/clockgame/resource/1/Data.qml b/src/activities/clockgame/resource/1/Data.qml
--- a/src/activities/clockgame/resource/1/Data.qml
+++ b/src/activities/clockgame/resource/1/Data.qml
@@ -1,9 +1,9 @@
 /* GCompris - Data.qml
  *
- * Copyright (C) 2018 Johnny Jazeix <jazeix@gmail.com>
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
  *
  * Authors:
- *   Johnny Jazeix <jazeix@gmail.com>
+ *   Deepak Kumar <deepakdk2431@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
@@ -21,36 +21,22 @@
 import "../../../../core"
 
 Dataset {
-    objective: qsTr("Set and display time on analog clock for full half and quarters of an hour.")
+    objective: qsTr("Set and display time on analog clock for full hours.")
     difficulty: 2
     data: [
-    {
-        "numberOfSubLevels": 5,
-        "fixedMinutes": 0,
-        "displayMinutesHand": false,
-        "fixedSeconds": 0,
-        "displaySecondsHand": false
-    },
-    {
-        "numberOfSubLevels": 5,
-        "fixedMinutes": 15,
-        "displayMinutesHand": true,
-        "fixedSeconds": 0,
-        "displaySecondsHand": false
-    },
-    {
-        "numberOfSubLevels": 5,
-        "fixedMinutes": 30,
-        "displayMinutesHand": true,
-        "fixedSeconds": 0,
-        "displaySecondsHand": false
-    },
-    {
-        "numberOfSubLevels": 5,
-        "fixedMinutes": 45,
-        "displayMinutesHand": true,
-        "fixedSeconds": 0,
-        "displaySecondsHand": false
-    }
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 0,
+            "displayMinutesHand": false,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        },
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 0,
+            "displayMinutesHand": false,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        }
     ]
 }
diff --git a/src/activities/clockgame/resource/2/Data.qml b/src/activities/clockgame/resource/2/Data.qml
--- a/src/activities/clockgame/resource/2/Data.qml
+++ b/src/activities/clockgame/resource/2/Data.qml
@@ -1,9 +1,9 @@
 /* GCompris - Data.qml
  *
- * Copyright (C) 2018 Johnny Jazeix <jazeix@gmail.com>
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
  *
  * Authors:
- *   Johnny Jazeix <jazeix@gmail.com>
+ *   Deepak Kumar <deepakdk2431@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
@@ -21,32 +21,22 @@
 import "../../../../core"
 
 Dataset {
-    objective: qsTr("Set and display time on analog clock for a time containing minutes and seconds.")
-    difficulty: 4
+    objective: qsTr("Set and display time on analog clock for full and half hours.")
+    difficulty: 2
     data: [
-    {
-        "numberOfSubLevels": 5,
-        "displayMinutesHand": true,
-        "fixedSeconds": 0,
-        "displaySecondsHand": false
-    },
-    {
-        "numberOfSubLevels": 5,
-        "fixedMinutes": 0,
-        "displayMinutesHand": true,
-        "fixedSeconds": 30,
-        "displaySecondsHand": true
-    },
-    {
-        "numberOfSubLevels": 5,
-        "displayMinutesHand": true,
-        "displaySecondsHand": true
-    },
-    {
-        "numberOfSubLevels": 10,
-        "displayMinutesHand": true,
-        "displaySecondsHand": true,
-        "zonesVisible": false
-    }
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 0,
+            "displayMinutesHand": false,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        },
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 30,
+            "displayMinutesHand": true,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        }
     ]
 }
diff --git a/src/activities/clockgame/resource/1/Data.qml b/src/activities/clockgame/resource/3/Data.qml
copy from src/activities/clockgame/resource/1/Data.qml
copy to src/activities/clockgame/resource/3/Data.qml
diff --git a/src/activities/clockgame/resource/4/Data.qml b/src/activities/clockgame/resource/4/Data.qml
new file mode 100644
--- /dev/null
+++ b/src/activities/clockgame/resource/4/Data.qml
@@ -0,0 +1,56 @@
+/* GCompris - Data.qml
+ *
+ * Copyright (C) 2020 Deepak Kumar <deepakdk2431@gmail.com>
+ *
+ * Authors:
+ *   Deepak Kumar <deepakdk2431@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 "../../../../core"
+
+Dataset {
+    objective: qsTr("Set and display time on analog clock for a time containing minutes.")
+    difficulty: 3
+    data: [
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 25,
+            "displayMinutesHand": true,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        },
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 55,
+            "displayMinutesHand": true,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        },
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 35,
+            "displayMinutesHand": true,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        },
+        {
+            "numberOfSubLevels": 10,
+            "displayMinutesHand": true,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        }
+
+    ]
+}
diff --git a/src/activities/clockgame/resource/2/Data.qml b/src/activities/clockgame/resource/5/Data.qml
copy from src/activities/clockgame/resource/2/Data.qml
copy to src/activities/clockgame/resource/5/Data.qml
--- a/src/activities/clockgame/resource/2/Data.qml
+++ b/src/activities/clockgame/resource/5/Data.qml
@@ -24,29 +24,36 @@
     objective: qsTr("Set and display time on analog clock for a time containing minutes and seconds.")
     difficulty: 4
     data: [
-    {
-        "numberOfSubLevels": 5,
-        "displayMinutesHand": true,
-        "fixedSeconds": 0,
-        "displaySecondsHand": false
-    },
-    {
-        "numberOfSubLevels": 5,
-        "fixedMinutes": 0,
-        "displayMinutesHand": true,
-        "fixedSeconds": 30,
-        "displaySecondsHand": true
-    },
-    {
-        "numberOfSubLevels": 5,
-        "displayMinutesHand": true,
-        "displaySecondsHand": true
-    },
-    {
-        "numberOfSubLevels": 10,
-        "displayMinutesHand": true,
-        "displaySecondsHand": true,
-        "zonesVisible": false
-    }
+        {
+            "numberOfSubLevels": 5,
+            "displayMinutesHand": true,
+            "fixedSeconds": 0,
+            "displaySecondsHand": false
+        },
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 25,
+            "displayMinutesHand": true,
+            "fixedSeconds": 30,
+            "displaySecondsHand": true
+        },
+        {
+            "numberOfSubLevels": 5,
+            "fixedMinutes": 15,
+            "displayMinutesHand": true,
+            "fixedSeconds": 45,
+            "displaySecondsHand": true,
+        },
+        {
+            "numberOfSubLevels": 5,
+            "displayMinutesHand": true,
+            "displaySecondsHand": true
+        },
+        {
+            "numberOfSubLevels": 10,
+            "displayMinutesHand": true,
+            "displaySecondsHand": true,
+            "zonesVisible": false
+        }
     ]
 }