Downloadable Content

The first Downloadable Content (also known as DLC) for Left 4 Dead has been confirmed by Valve Corporation on February 5, 2009. The content will be offered to both PC and Xbox 360 players, and is a free addition to the game. It will be available through Steam and Xbox LIVE. The pack has been dubbed the "Survival Pack", and it will feature many new things.


 * Make the Death Toll and Dead Air campaigns available for versus mode.
 * Add a new multiplayer gametype; "Survival", which will put the Survivors against waves of the Infected.
 * Survival mode will have twelve available maps, though whether all are new or existing is yet to be confirmed.
 * The Source Software Development Kit will be released in this pack to the PC version, allowing the creation of custom Left 4 Dead campaigns which players will be able to find via the matchmaking system. However, this feature is only free to PC players, and owners of the Xbox 360 version will have to purchase it.

The Survival Pack is due to be released in the Spring of 2009.