Released: 2007
Developer/Publisher: Valve Corporation for EA
Platform(s): 360, PS3, PC

Twenty bones for three of the most innovative games ever within their respective genres (Half-Life 2 as a single-player FPS, Portal as a puzzler, and Team Fortress 2 as team-based multiplayer)? Well, that about settles it: the cake is NOT a lie.

YOU AUGHTA KNOW:
Portal's end credits song, "Still Alive," made its way to Rock Band last year. So GLaDOS we maaaaade it!