Just because Valve’s got a new baby sloshing around in its tremendous, engorged Boomer womb (insert baby Boomer joke here) doesn’t mean the developer’s going to start neglecting its first undead child. The proof? Abrand new, totally free DLC campaign is on the way for stalwart L4D1 supporters.

Titled “Crash Course,” the new campaign fits snugly between No Mercy and Death Toll, chronologically speaking. Along with new Campaign and Survival maps, new character dialogue, a recharge timer for Infected teammates, and rebalanced item spawns also put the C in this DLC.

The new scenarios will, of course, work fine and dandy with Campaign mode, but apparently, Crash Course’s true purpose is to be a “30 minute” showcase for Versus mode. You know, more like a typical multiplayer shooter.

It’s out in September. And it’s free! Unless you’ve been so horrendously wronged by the existence of Left 4 Dead 2 that even Valve’s continued support of L4D1 (the very thing you feared for when L4D2 was announced) isn’t enough to stop your steaming, you’ll play it. You’ll play it and you’ll love it because, well, why not?

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