The recently announced Left 4 Dead Downloadable Content (L4D DLC) will be delivered to Xbox 360 and PC gamers free of charge. Due for release this spring, the DLC for 2008's best-selling new game property on the PC and Xbox 360, is dubbed the L4D Survival Pack and introduces a new multiplayer game mode entitled, Survival, plus two complete campaigns for Versus Mode (Death Toll, Dead Air). A Critic's Choice Edition of the game will be heading to retail stores this spring, and will include access to all the content introduced in the L4D: Survival Pack.