Valve has, as promised, given a brief unveiling of the new and recently announced Survival Pack add-on that should be coming to the PC and Xbox 360 soon.
The unveiling took place on Gametrailers TV
(19 minutes into the episode, by the way), which has brief footage of the additions made to Versus Mode but not any of the new Survival Mode unfortunately.
The downloadable pack, which will also be released in stores by Electronic Arts, will allow players to finally try the Dead Air and Death Toll campaigns in Versus Mode, as well as opening a wholly new gameplay type; Survival.
Survival Mode will be, as expected, a never-ending gameplay type similar to Horde mode in Gears of War 2
. Survival Mode will let up to four players to team up over twelve maps to see just how long they can survive constant zombie swarms. There'll be no safe rooms - just wave after wave of undead.
Valve has so far been keeping quiet about any further details about the new mode though, so we're still unsure if those 12 Survival Mode levels will be at all new, or just tweaked versions of levels from existing the campaigns. Probably the latter.
The Survival Mode pack will be released freely for all existing owners of Left 4 Dead
, regardless of platform. So, if you've not picked up a copy yet then we suggest you read our full Left 4 Dead review
for more info before letting us know what you think in the forums