Best of 2012
My real #1 game of 2012 is really To the Moon, but it technically came out in 2011 despite not arriving on Steam until 2012 (when I picked it up). From my recommendation on Steam:
Never has a video game evoked this kind of emotion in me. To The Moon tells what has to be the most touching story ever told in a video game, and certainly could rival those told in other mediums (books, movies). Anyone with a heart should play this game through to the end to experience its brilliant narrative.