'Left 4 Dead' Adding New Campaign, Free For PC, $7 For 360

In what will probably be the last hurrah for the original "Left 4 Dead," Valve will be releasing a brand new campaign. Titled "Crash Course," the campaign will consist of several levels that bridge the gap between "No Mercy" and "Death Toll."

Am I the only one that didn't even realize there was something that happened between those two campaigns? Or that the campaigns were even tied together chronologically? Sorry, I must've been too busy killing zombies.

Anyway, "Crash Course" will probably take place on a highway, as that seems to make the most sense. It's also supposed to be a bit more bite-sized than the other campaigns, taking around 30 minutes for a Versus match.

The campaign will be free for PC users, but if you're looking to expand the 360 version it'll set you back $7 or 560 MS points. Not cool!

Tags left 4 dead, left 4 dead: crash course