News Warhammer 40K: Space Marine Full Co-Op Details Coming This Week August 29, 2011 John Papadopoulos 1 Comment Get ready Space Marines because the full details of Warhammer 40K: Space Marine’s Co-Op mode will be revealed this week. That is according to the game’s official twitter account, which hinted that the full details will be unleashed this week. As the team tweeted via the game’s Twitter account: “Ready to wreck havoc in Space Marine with your friends? Stay tuned for full Co-Op details this week!” Warhammer 40K: Space Marine is slated for release on September 9th on PC, X360 and PS3. Those interested can download its demo to get a taste of what’s about to come via Steam!