You Dunnit

YouDunnit is a 2D memory game that positions itself somewhere between a choose-your-own-adventure and a literary hypertext. The game plays out as a mystery, only backwards. You are the killer, and as you go back in time, you must remember the lies you’ve told in the future, keep them consistent, and make sure to not interrupt causality. If you’ve caused confusion with a bomb to create an alibis, you’d better make sure you pick up a bomb or make one when you get to the earlier scene.

YouDunnit, by Mark Luck, Danny Day, Rodain Joubert, and Robbie Fraser, is available for Windows XP, Vista, or Windows 7.