What games are offline multiplayers for xbox 360

What kind of games are you looking at-first person shooters,third person shooters, racing etc? If you play first and third person shooters, Call of duty modern warfare 3(fps) and Gears of war 3(tps) are awesome multiplayer games where you can play upto 4 players.Gears of war 2 supports only 2 player. In racing, almost all games are multiplayer....hope this helps