CHEAPEST FOR THE GAME AT THE MOMENT!
* Next-generation co-op action gaming from the makers of Half-Life, Portal, Team Fortress and Counter-Strike.
* AI Director 2.0: Advanced technology dubbed "The AI Director" drove L4D's unique gameplay - customising enemy population, effects, and music, based upon the players' performance. Left 4 Dead 2 features "The AI Director 2.0" which expands the Director's ability to customise level layout, world objects, weather, and lighting to reflect different times of day.
* New melee weapons - axe, chainsaw, frying pan, baseball bat - allow you to get up close with the zombies.
* Four different Survivors. New story. New dialogue.
* More game. On day one, Left 4 Dead 2 features more co-operative campaigns, more campaigns and maps for the Versus game modes than Left 4 Dead, plus support for Survival Mode out of the box.
* Stats, rankings, and awards system drives collaborative play.