
There are four new characters, new weapons, entirely new melee weapons, and new items. There is one new gameplay mode that is not being revealed at this time. Each campaign will have support for four-player co-op, as well as Versus mode and Survival mode. Welcome to New Orleans it's full of undead! Here's the quick summary: Left 4 Dead 2 will feature five new campaigns, as opposed to the original's four. And since Valve employees get to choose their next project, it quickly paved the way for Left 4 Dead 2. However, Valve's Chet Faliszek (known almost universally in the industry as just Chet) told us that when they finished production of Left 4 Dead last year many of the developers had ideas they wanted to pursue for a sequel.

The sequel is due out on November 17, almost one full year later. Now it might seem unusual for Valve to be rolling out a sequel to Left 4 Dead so quickly after all, the original game shipped on November 18. But if you want to learn more, read on, because we were at Valve last week to actually play through one of the sequel's campaigns (the E3 demo only features the first two levels of the campaign that we played), and we got all the bloody details.

By watching the announcement trailer, you'll discover that there are new characters, special zombies, and even melee weapons like a chain saw. By the time you read this, Valve will have announced the existence of Left 4 Dead 2 at Microsoft's E3 press conference.
