Ps3: Everything that Playstation plus has given out in North America since March 2013. (Just got a hold of Borderlands 2). (I have no mic though sorry, that will change eventually).
Steam: Left 4 Dead 1/2, Dungeon Defenders, Civ V (still a newb though), Lara Croft and the Guardian of Light, Pixel Junk Monsters Ultimate (cause its multiplayer).
Origin: Mass Effect 3 (The multiplayer part).
PC: Diablo 3
Wii U: Dungeons and Dragons the Arcade Game (Cause its multiplayer).