The Kokoromi Collective have an interesting invitational challenge – One Button games. Design a game with only one button as input. Neat.
Kokoromi is an experimental game collective formed by a rare union of Montreal gamemakers and curators to promote games as an art form and expressive medium worldwide. Based in Montreal, Quebec, Canada, Kokoromi produces events, develops games, and hosts a blog at www.kokoromi.org. (About Us)