Multiplayer tower defense games for Xbox 360 with 2-player online support
Dungeon Defenders
Players: 4 local, 4 online
Plants vs Zombies: Garden Warfare
Players: 0 local, 4 online
Toy Soldiers: Cold War
Players: 2 local, 2 online
Iron Brigade
Players: 0 local, 4 online
Sanctum 2
Players: 0 local, 4 online
South Park Let's Go Tower Defense Play!
Players: 4 local, 4 online
Defenders of Ardania
Players: 0 local, 4 online