Crash Course: Valve announce new downloadable Left 4 Dead campaign

Valve has just announced the latest round of DLC set for the original Left 4 Dead with Crash Course, a new campaign due in September that will "bridge the gap between the end of the No Mercy campaign and the beginning of Death Toll" -- with "new locations, new dialogue from the original cast, and an explosive finale."

Valve says that while the campaign will work in both co-op and survival mode, "the primary goal of "Crash" is to deliver a complete Versus mode experience in just 30 minutes, resulting in a streamlined version of the game's existing Versus campaigns," and will include "a recharge timer for infected teammates... and item spawn behavior has changed for more balanced gameplay."

The new campaign will be available as a free update for PC players, and will cost 560 Points for Xbox 360 users.