I released 'Find the Mafia!', which is an iOS (iPhone and iPad) puzzle game. The game is based on the so called 'maximum clique problem', but players need not know it, the rules are very simple, even understandable by relatively small children. (Although on higher levels it can be extremely challenging, all depends on which level you play it.)
Web site with video:
I hope you will find it fun, even addicting!
Feedback is very much appreciated.