This is not game, but some might find it interesting, or even amusing.
I quote from Wikipedia:
Oblique Strategies (subtitled Over One Hundred Worthwhile Dilemmas) is a card-based method for promoting creativity jointly created by Brian Eno and Peter Schmidt, first published in 1975 […] Each card offers a challenging constraint intended to help artists (particularly musicians) break creative blocks by encouraging lateral thinking.
My app displays one strategy at a time. You must wait at least 30 seconds before you can request a new strategy by pressing the A button (this delay is intentional, as you are supposed to reflect on the challenge). After 3 minutes, wether you press the A button or not, a new strategy will be displayed. These values can be changed in the configuration screen (press left button) and then they will be saved in the EEPROM.
This is my first Arduboy app (and my first Arduino project, in fact).