Clan Games

Halo is starting to feel a little tired, so I'm starting to look for a new clan game. These are the requirements for a clan game:

• On the Xbox 360 and supports Xbox Live multiplayer
• Has buy-in from myself, BeerMonkeee and OmniscientDeath (want to be on this list? show up more)
• Ideally supports at least 4-player or greater teams or co-op
• Fun enough to play for at least a year

Games vetoed for clan play:

• Rock Band 2 - No interest.
• Call of Duty: World at War - Game mechanics not "fun" enough. Too hard to differentiate friend or foe. Learning curve too steep for multiplayer.
• Fable II - Only 2 player co-op. Wonky camera makes combat impossible.
• Civilization Revolution - Games take way too long.
• Gears of War 2 - No critical mass amongst clan
  
• Rainbow Six Vegas 2 - No critical mass amongst clan
• Splinter Cell: Conviction - No critical mass amongst clan
• F.E.A.R. 2 - No critical mass amongst clan
• Tom Clancy's H.A.W.X. - Fun factor too low
  

Games still under consideration

• Left 4 Dead
• Street Fighter 4
  
• Halo Wars (3/3/09)