An epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.

Add mod Summary List Mods  (30 - 39 of 39)
Alien Swarm SDK Template Conversion
Alien Swarm

Alien Swarm SDK Template Conversion

3 years ago Released Mar 2012 Single & Multiplayer First Person Shooter

C_b_fofep and I decided to convert the Alien Swarm build back into an FPS source engine version. This takes the orange box or the SDK template code and...

Infestation
Alien Swarm

Infestation

4 years ago TBD Multiplayer Third Person Shooter

Lots more details in latest news post, looking for more team members too - if you feel you have something you could add to the mod send me a pm for a...

Alien Swarm Aliens Mod
Alien Swarm

Alien Swarm Aliens Mod

4 years ago Released Nov 2010 Single & Multiplayer Tactical Shooter

this "mod" will replace weapon's data and sounds for alien swarm making it feel like Aliens. Furthermore, maps will be made for this mod and the final...

Alien Haunt
Alien Swarm

Alien Haunt

4 years ago Released Oct 2010 Single & Multiplayer Adventure

Alien Haunt. A Map for Alien Swarm. 1 Campaign with 5 maps. Get ready to be swarmed by aliens!

Alien Swarm: The Darkness
Alien Swarm

Alien Swarm: The Darkness

4 years ago TBD Single & Multiplayer Tactical Shooter

The Darkness is a mod designed to put the players into a much more difficult position than that of the original Alien Swarm, by removing a lot of lighting...

Omnibus
Alien Swarm

Omnibus

4 years ago TBD Single & Multiplayer Arcade

Warhammer 40k mod for Alien Swarm. You play as one of four members in a Space Marine squad and you're sent to a Tyranid infected planet to investigate

Phobos Incident
Alien Swarm

Phobos Incident

5 years ago TBD Multiplayer Third Person Shooter

Phobos Incident is going to be a full-fledged campaign for Alien Swarm. It can be considered as a re-imagining or an alternate future for the base that...

Alien Frenzy
Alien Swarm

Alien Frenzy

5 years ago TBD Multiplayer Real Time Strategy

The year is 2026. The earth has been mostly destroyed by sunflares after the alien invasion. It seems their planet was destroyed first. The aliens came...

Infested Office
Alien Swarm

Infested Office

5 years ago Released Jul 2010 Single & Multiplayer Third Person Shooter

A test of skill and teamwork, this addon/map pack challenges you and your team even on the easier difficulty settings.

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Alien Swarm
Platform
Windows
Developer & Publisher
Valve
Engine
Source
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Official Page
Alienswarm.com
Release Date
Released Jul 2010
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