In the Nevada Desert, the U.S. Army have built a Military base around an ancient 'alien tomb' and after years of trying have managed to open it. Four survivors heard rumors of a fortified safe zone in the base, but have no knowledge of the tomb nor what will await them upon arrival... 4th OCTOBER 2014 - NEW VERSION RELEASED! Many thanks to JMantis for the custom soundtrack, bunny for custom ...

Participate in the Synergenic Technologies Inc. Hazardous Environment Teambuilding Study. Set in a series of testing chambers vaguely reminiscent of 80s and 90s science fiction. Fight through an increasingly difficult testing path to escape the research area. It's listed as 'in beta' because I'm looking into adding music and ironing out balancing issues. Please leave a comment or send me a m...

Stargate Command Center resurrected Bill in Goauld sarcophag, so our survivors can find the source of infection and destroy it once and for all. Problem is that its not on Earth.

This is a quick modification of the first map i ever made about 3 years ago for css zm. It occured to me that it would work a charm if ported into left 4 dead. Its probably the easiest survival map ever, as the survivors have a perfect vantage point above the huge bunker complex which is a labyrinth

WARNING: Only download if you like exploration based non linear maps, theres no rescue closets, dont whine The Xenomorphs have hijacked the starship von braun and the unn rickenbacker and are using them for there own devices. Activate their self destruct sequence then kill the dragonfly xenomorph queen

You have landed on the body of the xenomorph dragonfly queen, you must fight you way into the brain chamber and destroy its brain. Survive the gaunlet maze then you must conquer the 3 trials to open the brain chamber doors

The Xenomorphs have hijacked the UNN Rickenbacker and are planning to use its dual nuclear railguns against earth. Activate the self-destruct sequence by using the 7 control consoles then escape via the docking bay. Now with VERY creepy music This is the second of a planned 3 missions system shock 2 esque campaign.

The Xenomorphs are using the Von Brauns Simulation units to research a new generation of hunter killer hybrids. Activate the 7 self destruct control stations and escape in the emergency escape ship This is a prototype map of the first mission of a system shock 2 inspired campaign.

A new breed of hunter killer hybrids are being incubated and when they hatch, your doomed. This map is heavily inspired by the imperious system shock 2

DISTRESS CODE DELTA CHARLIE: Attention UNN Rickenbacker. This is Von Braun. Ship status critical. 80% of crew dead or worse. DON'T ATTEMPT RESCUE

7 trillion kilometers from earth, in the deep void of space, hostile xenomorphs have hijacked your ship and turned your comrades into zombies, your only choice is to fight and at least die human

Space Harrier is a one of a kind map for Left 4 Dead. Avoid incoming missiles fired from flying trucks and orbs while dodging trees, rocks, bushes and other objects placed in your path.