2 player split screen COOP/competitive COOP/Zombie Survival offline.
I'm loving the 4 player online COOP/competitive COOP!
(and it has the standard COD4 Online w/ WWII "spray paint")
Seriously, this probably the best WII FPS I've played, so if you're a fan of the genre, pick it up as it's a steal. It does have it's issue's, mainly horribly cheap enemy and NCP AI (Especially on the harder difficulties), but I understand the reasons for it.