Orcs Must Die! 2 announced, packing co-op
Robot Entertainment's Orcs Must Die! was a charming action-RPG take on the tower defense, hitting PC and Xbox Live Arcade last year, and now the indie has announced a sequel. Imaginatively named Orcs Must Die! 2, it'll bring a second playable character and a new co-op mode exclusively to PC this summer.

"War Of The Monsters did the same with the combining split screen on PS2, and I think a few other ..."
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