Co-operative multiplayer game and complete code base available for free.
User reviews:
Overall:
Overwhelmingly Positive (13,360 reviews) - 95% of the 13,360 user reviews for this game are positive.
Release Date: Jul 19, 2010

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Play Alien Swarm

Free Game

 

Recommended By Curators

"(Free) Co-operative multiplayer game and complete code base available for free. Made by Valve."

About This Game

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

System Requirements

    Minimum:
    • 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
    Recommended:
    • OS: Windows® 7 / Vista / Vista64 / XP
    • Processor: Intel core 2 duo 2.4GHz
    • Memory: 1 GB for XP / 2GB for Vista
    • Graphics: DirectX 9 compatible video card with Shader model 3.0. NVidia 7600, ATI X1600 or better
    • Hard Drive: At least 2.5 GB of free space
    • Sound: DirectX 9.0c compatible sound card
Helpful customer reviews
114 of 139 people (82%) found this review helpful
18 people found this review funny
23.5 hrs on record
Posted: November 5, 2015
Alien Swarm is proof of Valve's willingness to allow their IP's the experience of rotting to death for their own personal gain via staff resource redistribution. Forget Half-Life 3; if this excellent game could only get a single 15-minute campaign, then there's no more hope for the niche fanbase of Valve's bygone excellence.
Was this review helpful? Yes No Funny
54 of 60 people (90%) found this review helpful
31 people found this review funny
56.0 hrs on record
Posted: December 5, 2015
Go all the way over to a nuclear warhead, prime said warhead for explosion, and then die because one of your team mates decided to weld a door to block your path.

11/10, best teamwork I've ever seen.

But no, seriously, play this game NOW, it needs players something fierce.
Was this review helpful? Yes No Funny
41 of 44 people (93%) found this review helpful
6 people found this review funny
90.9 hrs on record
Posted: January 14
A great fun and free 4 player co-op top down shooter

Overview:

Despite the low player count on this game I highly recommend getting the game and playing it, I'd advise bringing friends if you can but you can still find others playing. The game is short but offers a good amount of entertainment and alien killing action. And being free you have nothing to lose.

Pros:

+Free
+4 player Co-op
+Varying levels of difficulty
+Levels and gameplay are entertaining
+Great atmosphere for fans of alien games
+Good amount and variation of weapons and equipment
+8 playable characters, each with their own pros and cons
+4 different roles/classes that encourage tactical team play

Cons:

-Story itself is not good
-Not a lot of people play the game
-A lot of players only play for a TF2 hat
-Harder difficulties can be insanely tough
-Achievements to get but are not easy, hard to 100%
-Very short game, 7 levels or so and they are not that long

Download Size: 2045mb
Achievement Difficulty: Very hard to 100%
Hours to 100%: 50+

Rating: ♥♥♥♥/♥♥♥♥♥
Recommendation: Highly recommended since its free
Was this review helpful? Yes No Funny
27 of 30 people (90%) found this review helpful
4 people found this review funny
5.4 hrs on record
Posted: November 2, 2015
This game is fun, but it needs workshop stuff. I think that a mod community could make this game so much more.
Was this review helpful? Yes No Funny
11 of 12 people (92%) found this review helpful
3 people found this review funny
1.4 hrs on record
Posted: December 19, 2015
alright this game was better then expected

me and some friends were looking for some ♥♥♥♥♥♥ co-op free to play games and then stumbled uppon this gem. we decided to go ahead without looking at anything before hand. so there we were, all in the 4:6 glory playing on brutal.
it doesnt matter. this game was too. much. fun.

im not kidding. i thought that this game would be ♥♥♥♥♥♥. but it holds up. even if you suck and have no co-oprative skills and enjoy team killing, its still fun.

the controles are easy to figure out so you can literally pick this game up and play right away.

PROS
+can double turret in loadout
+team killing
+can camp in spawn 4 evah
+♥♥♥♥ing with others on dedicated servers


CONS
-team killing
-♥♥♥♥ing stock valve sound effects
-needing a tech all the god damn time

i honestly cant recommend this game enough
download it now, even a potao could run this.
Was this review helpful? Yes No Funny