Multiplayer first person shooter games for Xbox 360 with 4-player local/couch support
Quake II
Players: 4 local, 0 online
DOOM
Players: 4 local, 4 online
Call of Duty: Black Ops 2
Players: 4 local, 4 online
DOOM II
Players: 4 local, 4 online
Marathon: Durandal
Players: 4 local, 8 online