So did some reading on this one today. Four player Co-Op look like it might be a really nice touch. Check out this preview: http://www.gamesradar.com/xbox360/aliens-colonial-marines/news/aliens-colonial-marines-gameplay-info/a-20080311143729703071/g-20070604114510395087 (http://www.gamesradar.com/xbox360/aliens-colonial-marines/news/aliens-colonial-marines-gameplay-info/a-20080311143729703071/g-20070604114510395087)
I'm just hoping they can capture the gloom and doom of the movies, making you sit on the edge of your seat for the duration of the game.
Hey, not bad!