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.

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Treyzen says

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the camera movement doesn't feels right the way it is, i would prefer the camera movement to be more like Hypovolemia (Mod) is seems to feel more better camera movement,

the gameplay derservers it best for the gun play, although the storyline is too short,

let's just say, if you guys make another Alien Swarm eg.Alien Swarm Source that would be promising to us

great game

Love this game ;)

Great game and hey it's free!

Can't argue with a free game, especially with the quality this provides. There are a multitude of potential this game had, and provided hours of amusement for a group of friends.

Control-wise, this game does the top-down view very well, with responsive controls that will keep up with the intensity of the action on screen, as well as full customizability from the console commands provided by the Source Engine.

Graphics, well, they are pleasing, while showcasing the lighting effects and fluidity of the action. It won't set the world alight, but still quite good to today's standards for a free game.

Gameplay, the hit detection does an admirable job on doing its job, but there will be some weapons that will be crowd favorites over others for making things easier. However, the pacing can spike on a few occassions if the team isn't careful, or the Onslaught Mode is turned on. Moreover, there's only one official campaign included with the game, while replayable, it will wear over time. The community has done a great job in adding more to the game in terms of campaigns, but Valve rarely supports this game, which leaves much to be desired in fixes for some glitches and overall longevity. Nevertheless, it's free, it's totally recommended if you can get 3 other friends to play along for a few hours. But beyond the achievement chases and personal challenges, the game needs more to stay on your hard-drive for a long time.

I picked this game up when it first launched to the public and just loved it. Even with the content it had then, the game kept me and a few friends entertained for a good few hours. If I recall correctly, it came with a SDK even back then, so the game should have tons of community created content already.

A few words about the game itself. It's an addictive top-down alien shooter with co-op campains (best with friends, trust me). It has class-based leveling and loads of weapon and item combinations. Valve made a few campaigns for it but I'm sure there should be more made by players (unless the game is dead by now) and that adds a bit replay value.

All in all, I have fond memories of this game and the only probable reason I ever put it down was because most of my friends moved to different games. The game has a lot of potential for entertainment seekers and challenge junkies, but a lot of it falls on the community's shoulders.

Love the co-op in the game

Probably one of the best alien oriented games I've played. I'd suggest getting friends to play this game with you though considering the lack of people on servers and the AI on the bots are horrendous. All in all this game is very entertaining and very difficult.

You get what you pay for.

Just a great game, tgis is one of the best free games ever expierienced!

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