Bastion, Gunpoint, To The Moon (although I would prefer to call it an interactive story because the game aspects are basically nonexistent), Cave Story, Audiosurf, The Binding of Isaac, Bleed, FTL: Faster Than Light, Time Fcuk, Hotline Miami, Trine, Realm of the Mad Gods, Pineapple Smash Crew, Monaco, and Jamestown off the top of my head.