In a post on the official forums for Warhammer 40,000: Space Marine, a THQ representative had stated that the co-op mode the game will not be present at the launch, but will appear as free downloadable content after thirty days after for those who buy a copy But the game's new fee for those purchasing second-hand.

The message was hastily removed and THQ has stepped in with an official statement announcing that Warhammer 40,000: Space Marines have the co-op mode and more details will be revealed during the month, not specifying whether this will actually be available later and pay for those who have not purchased the game again. We will keep you informed.