At a hands-on event in San Francisco tonight, Valve pulled the covers off of a new competitive multiplayer mode that will appear in Left 4 Dead 2 -- "Scavenge."
This new mode (designed to be shorter than the traditional competitive) has four survivors fighting to find 16 gas cans across the game map. Using the cans, the goal is to fill up a generator to win the match. Split up over six rounds (three per team), each starts with 120 seconds; each gas can will add an additional 20 seconds to the overall time. If time runs out, yet one survivor is still holding a gas can, the game will go into overtime until the generator is up and running or an infected knocks it from their hands.
On the opposing team will be the Infected, who are doing everything they can to feast on human flesh and (of course) stop the survivors from restarting the generator. Not only can infected knock the gas cans from the hands of the survivors, but special infected like the "The Spitter" can light the cans on fire with its phlegm. Survivors must also watch their fire -- one stray bullet can set the can on fire as well.
Valve are planning to ship Left 4 Dead 2 with six maps for "Scavenge" mode, each reconfigured maps from the game's campaign. "Motel" is one such area, and Hamza "The Shark" Aziz is going hands on with it as I type. Details, impressions, and more soon... if he survives.