That didn't take long. Barely a month after the release of Left 4 Dead 2, Valve has announced its first round of downloadable content for the co-operative zombie shooter. The upcoming add-on will include a new campaign, The Passing, and it will become available for the PC and Xbox 360 in the spring.
Set after the game's existing Dead Center campaign, The Passing will see the four survivors from the original Left 4 Dead meet up with their Left 4 Dead 2 alter egos in a "small town in rural Georgia." Valve is cooking up new arenas for the game's Survival, Versus, and Scavenge modes, not to mention a "new co-operative challenge mode of play."
The Passing will also introduce a new "uncommon common" class of zombie, a new melee weapon, and a new firearm. Valve hasn't yet revealed what role the survivors from the first game will play, but it says players will take control of the Left 4 Dead 2 survivors. That could mean the original survivors will show up as bots or scripted non-playable characters. In any case, Valve marketing chief Doug Lombardi says in the press release, "The Passing will become the most important campaign in the Left 4 Dead story, as all the Survivors are being called together in one campaign."
Valve hasn't discussed pricing, either. So far, though, Valve has offered all downloadable content for the first Left 4 Dead free of charge on the PC. (Thanks to Shacknews for the tip.)