Valve has announced that it will release Dead Air, the new Cold Stream DLC for Left4Dead 2 early, but only if 20,000 people help out.
The developer is looking for people to play Cold Stream by pounding on the campaign and looking for bugs.
If 20,000 people manage to earn the Stream Crosser achievement (Survive a campaign of Cold Stream on any difficulty) by the end of day this Sunday, Valve will release Dead Air from the upcoming Cold Stream DLC early.
If you only have the game on Xbox 360 and not PC, Valve have you covered, as it has decided to reduced Left 4 Dead 2′s price by 75. That seems a pretty good deal to us, although it’s for today only so you best be quick.