The coop was originally scheduled for Bulletstorm - Multi

Cliff B in an interview with "The Telegraph" is about Bulletstorm and reveals that he hadinitially opted for a cooperative mode. The reason why it has been decided to cancel it,Cliff adds, it was mainly to keep some future, as time slows down, for example, or thegiant dinosaur, which co-op would vanish due to technical reasons or for reasons ofgameplay. I honestly would have preferred the coop but everyone (rightly) made their own choices.