Valve has revealed the first downloadable addition to Left 4 Dead 2, a new episode named "The Passing". The campaign, set after the events of "Dead Centre", features a meet up between Ellis, Coach, Rochelle, Nick and Bill, Francis, Zoey and Louis.
"The Passing" offers more than just a friendly Survivor get-together, adding one new "uncommon common" infected type, new weapons and "a new co-operative challenge mode of play". The new campaign will naturally be playable in Survival, Versus and Scavenge modes in addition to that still unannounced newer mode.
Left 4 Dead 2's "The Passing" is scheduled for release in the first quarter of 2010 for the PC and Xbox 360. Pricing has not yet been announced.