Activision sheds light on some gameplay details that should raise an eyebrow for some gamers interested in Treyarch's latest effort in the Call of Duty series. World at War looks to "change the way we play WW-II games". I don't know how you can change that genre aside from using different locations, or even making it futuristic in some sense. Either way, hit the jump below to check out some details on Co-Operative Play.

“With Call of Duty: World at War, we’re re-defining what it means to play a WWII game,” said Mark Lamia, Studio Head for Treyarch. “We’re excited to give players a host of new enemies that employ entirely new tactics, as well as new, groundbreaking tools – like co-op and the flamethrower – to succeed in the epic fight.”

Call of Duty: World at War introduces co-operative play, bringing fresh meaning to the “No One Fights Alone” mantra with up to four-players online for Xbox 360, PS3 and PC, or two-player local split-screen on consoles. Nintendo Wii will also support a unique co-op mode for two players. For the first time ever players will experience harrowing single-player missions together for greater camaraderie and tactical execution. The co-op campaign allows players to rank up and unlock perks in competitive multiplayer by completing challenges and earning experience points, adding continuous re-playability and team-based gameplay. Whether playing competitively or cooperatively – if players are online with Call of Duty: World at War – they will always gain experience points. Based on a player’s experience rank and rank of the player’s friends, Call of Duty: World at War will scale dynamically to provide a deeper level of challenge.

Call of Duty: World at War is in development for the Xbox 360™ video game and entertainment system from Microsoft, PLAYSTATION®3 computer entertainment system, Nintendo® Wii™ and Games for Windows® PC. The title is scheduled for release this fall and has not yet been rated.