There are times when going at it alone just isn't enough, and you want a buddy by your side to help make it through to the day, not to mention help soak up enemy bullets. For this, Activision has revealed how co-op multiplayer will be handled in Call of Duty: World at War, in which players will lace up in the military boots of either U.S. Marines or Russian soldiers in both the South Pacific and European theaters of war.

Specifically, the Treyarch-developed shooter will include four-player online co-op for the Xbox 360, PS3, and PC, while the console versions will also allow soldiers to pair up offline for local split-screen gameplay, with "a unique co-op mode for two players" reserved for soldiers waggling on the Wii. However, the game's online focus won't end with simply gunning down enemy soldiers and offering moral support to buddies trying to make it through the game's "darker themes." Activision notes that Call of Duty: World at War will shell out persistent experience points to players participating in both competitive and cooperative online battles, as well as a difficulty curve that will scale depending on "a player's experience rank and rank of the player's friends."