- missing-letter
- guesscount
- click_on_letter (and click_on_letter_up)
- lang
- readingh (and readingv)
- letter-in-word
- digital_electricity
- bargame (and bargame_2players)
- note_names
- superbrain
- solar_system
- piano_composition
- number_sequence
- balancebox
- hangman
Note that this list does not check the subactivities if there are!
Then probably move the DialogActivityConfig to activities/menu as it is the only use case we'll have