Left4dead is a brand new first person horror survivel game from valve which features 4player coop mode. http://www.gametrailers.com/player/35432.html?type=  

What's the Game About Dead Space is a sci-fi survival horror game in development at EA Redwood Shores for Xbox 360 and PlayStation 3. The title is set 500 years in the future, in a galaxy in which mankind has used all of Earth's resources. In this post-Earth setting, mankind must ...