Valve Corporation has announced that its first-person zombie shooter game Left 4 Dead will receive a new update next week via Steam. So obviously this is for the PC version only, sorry Xbox 360 gamers. The update will focus on custom campaigns and introduces additional features.

Notable features includes new Add-On framework, a re-tooled matchmaking system to provide extensive support for custom add-on campaigns, a 'Create Lobby' option will be now directly available from the 'Play Online' menu and the release of the Authoring tools/SDK.

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