Rooms and
Rooms: Source might be what you're looking for while you wait for the new competition.
In other news, Valve are hinting at new Left 4 Dead content just around the corner, including Death Toll and Dead Air in versus, and possibly a new campaign. Win.
And congrats to valve for keepin it fresh and giving us some new L4D content, even though I'm years away from getting bored with the current content.
My question, why couldn't dead air and blood harvest versus modes be released sooner, with the rest of them? Makes me wonder exactly what modifications they are going to make to the campaigns.
Its freakin awesome!
I'm glad they are adding verses support for the other campains, I've always wanted to play Dead Air as a smoker.
afaik Valve just hasn't made them available yet.