* Co-op game mode for up to six players obliterating multiple waves of specimens

* Persistent Perks system, allowing players to convert their in-game achievements into permanent improvements to their character’s skills and abilities

* Over 40 Steam Achievements, including “Dignity for the dead” for killing 10 enemies feeding on dead teammates’ corpses and “Hot Cross Fun” for finishing off 25 burning enemies with a Crossbow.

* Watch those crucial and violent creature deaths in slomo “ZEDtime”, even in multiplayer

* Solo game mode for offline play

* 9 different monster types trying to eat your face off, armed with everything from teeth and claws, through to chainsaws, chainguns and rocket-launchers

* 12+ weapons for the players to chose from, ranging from knives and fire-axes up to pump shotguns, rifles and a flamethrower

* Add in a welder, medical tools and body armor to help the players survive

* Players choose which Perks to play with, so they can best balance out a co-op team to survive the horrors

* Open, non-linear play areas: choose when and where to fight – or run; weld doors closed to try and direct the monster horde

* Fully-configurable, allowing players to change things as simple as the difficulty level or number of creature waves, or go so far as to set up their own favorite waves of monsters

* Support for Steam Friends and other Steamworks features

* Includes SDK for the creation of new levels and mods
I saw a preview in a recent PCGamer edition, and it caught my eye. It looks like a more serious version of L4D with more guns, more zombie (human clone experiments) variations, and a storyline. It's only £11 if you pre-order from Steam, I was thinking if enough of you (it's 6 player co-op) thought this was interesting we could give it a go.

It's out in just over two weeks. I particularly like the focus on mobility over the way you are forced to camp in L4D. It seems you can interact with the environment more, welding shut doors and creating killing zones to funnel the zombies down. There is a high res preview on their website, which looks very nice.

http://www.killingfloorthegame.com/