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Alien Swarm

  • 4players
  • 30–90 min
  • PC

Action · Aliens · Shooter

Valve's free top-down squad shooter: four marines with distinct classes fight through an alien-infested colony.

Who can play

  • No split-screen on any platform.
  • Online for up to 4 players on PC.
  • Free to play.
Free to play

How it plays

  • Each of the four players takes a class, such as officer, medic, tech or special weapons, and missions need all of them: the tech hacks doors, the medic keeps everyone alive and friendly fire punishes careless shooting.

  • It is free on Steam, so nobody has to buy anything.

  • The free community expansion Alien SwarmReactive Drop, a separate download, continues it with more missions and room for larger groups.

  • Action
  • Strategy

Is it good

94%

Very positive on Steam

of 22,000 reviewsRead on Steam (opens the store in a new tab)

18 playing on Steam, counted dailySteam Deck Playable

Every way to play together

No split-screen. Online for up to 4 on PC. Free to play. 94% positive of 22,000 Steam reviews.

  • Same screen
    No
    Same room, own screens
    No
    Online
    4players, full story together

    Up to four players, one marine each, play the campaign together.

Quick facts

Developer
Valve
Platforms
PC
Released
  • Jul 19, 2010 on PC
Languages
Text in 1 language

In these lists

Answers

Updated

Does Alien Swarm have couch co-op?
No. Alien Swarm has no same-screen multiplayer; play it together online instead.
How many players can play Alien Swarm together?
Online co-op for up to 4 on PC.
Do you need two copies of Alien Swarm?
No. It's free to play.
One of 1,371 co-op games where one copy is enough
Can you play the Alien Swarm story together?
Yes: the main campaign is playable together online.
What platforms is Alien Swarm on?
PC.
One of 3,994 co-op games
Does Alien Swarm work on Steam Deck?
Yes, with some extra steps: Steam rates it Playable for Steam Deck.
Is Alien Swarm free?
Yes, it's free to play.

More about the game

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