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Alien Swarm on Steam
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Co-operative multiplayer game and complete code base available for free.
Alien Swarm is a co-op, action and multiplayer game
developed and published by Valve.
Released on July 19th 2010 is available on Windows, Steam Deck and Steam Machine.
It has received 21,274 reviews of which 20,179 were positive and 1,095 were negative resulting in an impressive rating of 9.3 out of 10. 😍
The game is free to play on Steam.
The Steam community has classified Alien Swarm into these genres:
Media & Screenshots
Get an in-depth look at Alien Swarm through various videos and screenshots.
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System requirements
These are the minimum specifications needed to play the game. For the best experience, we recommend that you verify them.
Windows
- OS *: Windows® 7 / Vista / Vista64 / XP
- Processor: Pentium 4 3.0GHz
- Memory: 1 GB for XP / 2GB for Vista
- Graphics: DirectX 9 compatible video card with 128 MB, Shader model 2.0. ATI X800, NVidia 6600 or better
- Hard Drive: At least 2.5 GB of free space
- Sound: DirectX 9.0c compatible sound card
Steam Price & Best Deals
User reviews & Ratings
Explore reviews from Steam users sharing their experiences and what they love about the game.
All in all, it's a fun game. The controls can be a bit confusing, but the most important controls are easy to get the hang of. Basic controls (moving and shooting) are easy, but the complicated stuff like hacking and healing is harder. The music and voice acting is well-done, as is the sound design. Sometimes it's hard to believe this is on the Source Engine, but it is, just a different perspective than you might be used to. (Then again, so is Dota 2, but I don't play that.) Since this game is free, I recommend downloading it and practicing with bots first, then go online and play two games with humans to get your Team Fortress 2 hat. You're bound to get a few fun achievements along the way. I'll probably return to this game again in the future; it's not too shabby. 2021 edit: I've learned that one map counts as a "game" for the achievement. Most people, I think, quit out after they've completed the first two missions of the Jacob's Rest campaign, since by that time, they've gotten the TF2 hat. But you should keep playing! To get the full story, you need to play all six of the maps of the Jacob's Rest campaign. (I wish I knew why it was called that. Maybe the PDAs you can read have lore bits?)
This game is one of the best games out there for top down shooters. Very comparable to Helldivers but even more exciting because it brings along with it a very high level of suspense and "oh crap" moments which all happen in a split second whereas with Helldivers you sort of see that coming. I absolutely love this game and the level up system designed to it. I haven't tried it but I'm going to see if I can't play this with my playstation 4 controller and mouse and keyboard and team up with my wife and kill some aliens together. If I can't please please make that an option I would easily pay 20 dollars for this game to be full up and if it had around 30 or more levels I would pay 60. Absolutely Brilliant!
If you are looking for an action shooter with team cooperation where mindless running will get you killed this is a game for You. On most dificulties the games enemies coming in waves enforce cooperation. Fireing lanes start to matter and even when you are not on point but securing the back You feel like Your job matters. The game offers 8 marines to pick from. A pair of each of 4 archetypes. The medic, whos main role is to heal any damage and cure infestations. The Autogunner whos there to push the group forward or to set up supressing fire defending the group. The demolitions marine is best suited to dealing with heavier targets with the use of flamethrowers, mines grenades fire traps and the mean end of a shotgun. Finaly theres the technician for those who want to make the missions easier by welding doors and hacking security and objectives. Individual skill is rewarded with all of these archetypes without the loss of sense of benefiting from the teamwork of entire group. The setting pays hommage to classic movies and games of the alien franchise yet remains its own kind of alien style with a bit more arcade look. The topdown camera gives a more tactical feel for the gameplay in comparission to first person. Each marine has his own quips and oneliners, and character. Since its free i cannot see how you wouldnt recommend it.
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Frequently Asked Questions
Yes, Alien Swarm is free to play on Steam.
Alien Swarm is not on sale because is already free to play on Steam.
Yes, Alien Swarm received 20,179 positive votes out of a total of 21,274 achieving an impressive rating of 9.26.
😍
Alien Swarm was developed and published by Valve.
Yes, Alien Swarm is playable and fully supported on Windows.
No, Alien Swarm is not playable on MacOS.
No, Alien Swarm is not playable on Linux.
Yes, Alien Swarm is playable on Steam Deck, though it might require a few minor tweaks. Make sure to check the Steam store page and community feedback on ProtonDB for exact compatibility details.
Yes, Alien Swarm is playable on Steam Machine, though it might require a few minor tweaks. Make sure to check the Steam store page and community feedback on ProtonDB for exact compatibility details.
No, Alien Swarm does not support VR.
Alien Swarm offers both single-player and multi-player modes.
Alien Swarm includes Co-op mode where you can team up with friends.
No, Alien Swarm does not currently offer any DLC.
No, Alien Swarm does not support mods via Steam Workshop.
No, Alien Swarm does not support Steam Remote Play.
Yes, Alien Swarm is enabled for Steam Family Sharing. This means you can share the game with authorized users from your Steam Library, allowing them to play it on their own accounts. For more details on how the feature works, you can read the original Steam Family Sharing announcement or visit the Steam Family Sharing user guide and FAQ page.
You can find solutions or submit a support ticket by visiting the Steam Support page for Alien Swarm.
Data sources
The information presented on this page is sourced from reliable APIs to ensure accuracy and relevance. We utilize the Steam API to gather data on game details, including titles, descriptions, prices, and user reviews. This allows us to provide you with the most up-to-date information directly from the Steam platform.
Additionally, we incorporate data from the SteamSpy API, which offers insights into game sales and player statistics. This helps us present a comprehensive view of each game's popularity and performance within the gaming community.
Last Updates| Steam data | 19 September 2026 21:16 UTC |
|---|---|
| SteamSpy data | 15 October 2026 00:42 UTC |
| Steam price | 19 September 2026 21:16 UTC |
| Steam reviews | 22 October 2026 05:46 UTC |
If you'd like to dive deeper into the details about Alien Swarm, we invite you to check out a few dedicated websites that offer extensive information and insights. These platforms provide valuable data, analysis, and user-generated reports to enhance your understanding of the game and its performance.
- SteamDB - A comprehensive database of everything on Steam about Alien Swarm
- SteamCharts - Analysis of Alien Swarm concurrent players on Steam
- ProtonDB - Crowdsourced reports on Linux and Steam Deck Alien Swarm compatibility
Game modes
Multiplayer
Features
Online players
23
Developer
Valve
Publisher
Valve
Release
19 Jul 2010
Platforms