Power Gamer

From the left and moving counter-clockwise: Smash Bros, Warhammer, Too Human, Metroid, Heartless Emblem, Gears of War, Quake 3, Zerg Emblem, Deus Ex, Assassin's Creed, Oblivion, Yoshi Egg, Umbrella Corporation, Nobody Emblem, Marathon, The Legend of Zelda, Biohazard, Aperture Science, Halo, Super Mario, Terran Emblem, Megaman, Portal, Horde Emblem, Protoss Emblem, Skyrim, Pokemon, Half-Life, Kirby's Warpstar, Kingdom Hearts, The World Ends With You, Team Fortress 2.

These are in no particular order or grouping that my conscious mind can recognize.

Enjoy ;D