Alien Swarm overview

Overview

Alien Swarm comes from Valve and is published by Valve. It arrived on Steam on Jul 19, 2010, and it sits naturally among Single-player, Multi-player, Co-op, Steam Achievements, Captions available, Camera Comfort, Color Alternatives, and Custom Volume Controls. SteamPulse tracks it across Windows and Steam so readers get a quick useful snapshot, not just a wall of numbers.

Players and reviews

Alien Swarm's latest SteamPulse observation recorded 26 players at 13 September 2026 - 04:01:24 UTC, with a tracked peak near 7,857. This peak is the highest value in the available SteamPulse record and may not include activity before tracking began. Player reaction is 95% positive across 21,532 reviews.

Language and system requirements

Alien Swarm is available in 1 languages including:

3 regional rating boards including dejus, steam germany, and igrs

Sales, recommendations, and streams

Alien Swarm has sold up to 5,900,000 units and has 294 Steam recommendations. Revenue data is not available for this game yet. On Twitch, 0 streamers are live with around 0 total watchers.

Alien Swarm overview details

Alien Swarm combines live player counts with reviews, pricing, platform support, Store metadata, dated player history, media, recent news, and related games.

Steam Store description

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. Tactical, 4 player co-op action game with a top-down perspective Complete game code and mod tools Unlock persistent items by gaining levels Over 40 weapons and equipment with countless loadout configurations 4 unique classes and 8 unique characters Matchmaking, Steam Cloud, Steam Stats 64 achievements Tile-based map generation tool Powered by Source and Steam

SteamPulse editorial summary

Alien Swarm is listed as a game with Free to play. It supports Windows, belongs to Single-player, Multi-player, Co-op, Steam Achievements, Captions available, Camera Comfort, Color Alternatives, and Custom Volume Controls, and is associated with Action and Free To Play. SteamPulse's latest observation records 26 players at 13 September 2026 - 04:01:24 UTC, a tracked peak of 7,857, and 95% positive reviews.

Overview tags

Free to PlayCo-opActionMultiplayerOnline Co-OpAliensShooterSci-fiTop-DownTop-Down ShooterSurvivalPvEClass-BasedThird PersonTeam-Based

Content descriptors

This game includes frequent acts of violence

Highlighted achievements

Real questions answered from SteamPulse data, including live players, monthly momentum, review sentiment, regional audience signals, Twitch activity, and current Steam pricing.