Warhammer 40,000: Space Marine is to have a cooperative mode, but not at launch.
According to a since-removed post on the game’s official forums, the mode will become available “30 days give or take after launch.” Why? “We wanted to polish up the Co-Op aspect of Space Marine.”
That may be hard to swallow for some though, considering that the mode will only be available for those who purchase the title as brand new. Read the post: “Everyone who purchases Space Marine at retail (brand new) will get Co-Op for FREE. If you buy the game one year from now the Co-Op option will still be Free as long as the game is sealed brand new from retail.”
The game’s out in September; the 6th in NA, 9th in EU.