The lights are on
Cold Stream, which includes a fan made campaign, as well as ports of the original Left 4 Dead's assorted campaigns, is coming July 24.
The DLC will be available simultaneously for Xbox 360, Mac, and PC. Death Toll, Dead Air, Blood Harvest, and Crash Course are the campaigns we will be seeing from Left 4 Dead newly playable with Left 4 Dead 2's characters and weapons.
[via Left 4 Dead blog]
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