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.

Summary List Mods  (0 - 30 of 35)
Alien Frenzy
Alien Swarm

Alien Frenzy

4 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...

Alien Haunt
Alien Swarm

Alien Haunt

4 years ago Released Oct 31, 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 Aliens Mod
Alien Swarm

Alien Swarm Aliens Mod

4 years ago Released Oct 31, 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 Swarm Director Mod
Alien Swarm

Alien Swarm Director Mod

8 months ago Released Nov 3, 2011 Single Player Third Person Shooter

Welcome to the Alien Swarm Director Mod! ASDM is a single player Alien Swarm mod focusing on increasing replayability by creating a dynamic experience...

ALIEN SWARM FP
Alien Swarm

ALIEN SWARM FP

1 year ago TBD Co-op First Person Shooter

This is a first person view modification of "Alien Swarm"

Alien Swarm SDK Template Conversion
Alien Swarm

Alien Swarm SDK Template Conversion

2 years ago Released Mar 14, 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...

Alien Swarm: Reactive Drop
Alien Swarm

Alien Swarm: Reactive Drop

2 months ago Released Apr 9, 2014 Single, Multiplayer & Co-Op Arcade

Adds new PvP game modes, co-op features and singleplayer support into Alien Swarm without changing its concept.

Alien Swarm: Rifle Mod
Alien Swarm

Alien Swarm: Rifle Mod

5 months ago Released Jan 1, 2014 Single & Co-op Arcade

Rifle Mod is an Alien Swarm server-only mod that forces players to play with assault rifles only, harder aliens, more ammo, smarter bots. However rifle...

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...

Alien Swarm:Silencer Mod
Alien Swarm

Alien Swarm:Silencer Mod

1 month ago Released Nov 11, 2014 Single, Multiplayer & Co-Op Third Person Shooter

Do you think the aliens are deaf?Unfortunately,they have perfect hearing ability.In another word,the huge noice comes from your weapons can attract the...

Alien Swarm:SP
Alien Swarm

Alien Swarm:SP

1 year ago Released Feb 26, 2011 Single Player Third Person Shooter

Play the official Alien Swarm maps and any addons through the Offline Practice mode. Alien Swarm:SP also supports a large amount of configurable changes...

ALIENS
Alien Swarm

ALIENS

1 year ago TBD Single & Multiplayer Tactical Shooter

A mod for Alien Swarm that is based on the ALIENS movie but for a set of new marines to go and investigate LV426 and see what happened there! (This is...

Apocalypse-22
Alien Swarm

Apocalypse-22

5 months ago TBD Single, Multiplayer & Co-Op First Person Shooter

Apocalypse cuenta la historia de Abigaíl, una mujer de 28 años de edad en un futuro apocalíptico y sin memorias de su pasado. (Historia en desarrollo)

ASB²  mod
Alien Swarm

ASB² mod

2 years ago Released Jul 2, 2012 Multiplayer Tactical Shooter

ASB² mode (alien swarm beyond brutal) is a reborn ASBi game mode emphasizing the higher degree of difficulty, which includes the invalidity of such options...

B.R.I.S.k.
Alien Swarm

B.R.I.S.k.

1 year ago TBD Single Player Arcade

B.R.I.S.k. is a game with unique gameplay developed by a team «Two On The One Box», which has created a modification for the game Portal 2 - Afterword...

Black Mesa Swarm
Alien Swarm

Black Mesa Swarm

1 year ago Released Dec 20, 2013 Single & Multiplayer First Person Shooter

Black Mesa Swarm is an Alien Swarm total conversion remaking Valve Software's award-winning PC game, Half-Life.

Brawlers
Alien Swarm

Brawlers

2 years ago TBD Multiplayer Third Person Shooter

After the dust had settled from the worlds greatest war, stockpiles of defunct weapons and ammunitions around Europe were scheduled for destruction. Private...

Hypovolemia
Alien Swarm

Hypovolemia

1 month ago Released May 15, 2012 Single & Multiplayer Third Person Shooter

Hyp is a top-down shooter that focuses on intricate game design while offering a unique way to be immersed in the shooting culture.

IAF Weapon Drop
Alien Swarm

IAF Weapon Drop

2 years ago Released Mar 28, 2012 Multiplayer Third Person Shooter

Almost all weapons were modified more or less noticeable. Some of them are big changes (like semi-auto Railguns and Sniper Rifles or Miniguns with lot...

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...

Infested Office
Alien Swarm

Infested Office

4 years ago Released Jul 21, 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.

Lambda Wars
Alien Swarm

Lambda Wars

2 days ago Released Sep 25, 2012 Single & Multiplayer Real Time Strategy

Lambda Wars (formerly Half-Life 2: Wars) brings the struggle between the human resistance and their Combine overlords to a multiplayer real-time strategy...

Lights
Alien Swarm

Lights

2 years ago TBD Single & Multiplayer Cinematic

Once you find the light, nothing can defeat you...

Lylat's Last Stand
Alien Swarm

Lylat's Last Stand

1 year ago TBD Single & Multiplayer Third Person Shooter

SFR (WIP title) is a mod for the Source Engine. It's based on the 3d shooter game Starfox. It will be mostly based on the 1993 nintendo power comics...

Modular Combat 2
Alien Swarm

Modular Combat 2

4 days ago TBD Multiplayer & Co-op First Person Shooter

Modular Combat 2 is an upcoming role-playing shooter based in the Half-Life universe. The game will feature upgraded graphics with custom shaders, AI...

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

Optic
Alien Swarm

Optic

15 hours ago TBD Multiplayer First Person Shooter

Optic is a team-based multiplayer shooter where players can take the role of either a fast-moving runner or a slow-moving hunter.

Phobos Incident
Alien Swarm

Phobos Incident

4 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...

SourceForts 2
Alien Swarm

SourceForts 2

2 years ago TBD Multiplayer First Person Shooter

Redefine the environment around you. SourceForts 2 is a FPS game designed around building your base and battling against the opposing team in order to...

StormDrift
Alien Swarm

StormDrift

2 years ago TBD Multiplayer First Person Shooter

Total Conversion of the source engine, with deferred lighting. This mod/game is under heavy development and a lot of news is coming this week

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Alien Swarm
Platform
Windows
Developer & Publisher
Valve
Engine
Source
Contact
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Official Page
Alienswarm.com
Release Date
Released Jul 18, 2010
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Lambda Wars (Alien Swarm)
Lambda Wars Alien Swarm - Single & Multiplayer Real Time Strategy
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Optic Alien Swarm - Multiplayer First Person Shooter
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Alien Swarm Director Mod (Alien Swarm)
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Alien Swarm:Silencer Mod (Alien Swarm)
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Alien Swarm:SP (Alien Swarm)
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Swarm Director 2 (Alien Swarm)
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