A Shooter game by Valve, released in 2010
Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players into 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. Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.
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The official download size for Alien Swarm is 1 GB. Based on current hardware prices, this installation consumes approximately $0.06 worth of SSD storage space.
File Size
Est. SSD Cost
Estimated Time to Install
1 mins
Live player count and server population analysis.
There are currently 17 people playing Alien Swarm, indicating a niche or private community. Coordinate via Discord for best results.
Manual backup locations for PC, Mac, and Linux.
SteamOS and Linux Proton performance analysis.
Don't let the "Unsupported" tag fool you. While Valve hasn't officially verified Alien Swarm, ProtonDB users report it runs perfectly (Gold/Platinum rating). You may need to force a specific Proton version.
PC system requirements - Minimum vs Recommended specs.
To run Alien Swarm smoothly, your PC needs at least 1 GB for XP / 2GB for Vista RAM and a DirectX 9 compatible video card with Shader model 3.0. NVidia 7600 or equivalent GPU. Plan for 1 GB of storage.
Aggregated critic scores and player sentiment analysis.
Based on 1 critic reviews, opinion on Alien Swarm is divided. While it offers some unique shooter mechanics, the score of 60 suggests inconsistent execution. We recommend checking gameplay footage before buying.
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