Alien Swarm
Alien Swarm is free to play on Steam.
20
Playing now
95%
Positive Steam reviews
77
Metacritic
Co-operative multiplayer game and complete code base available for free.
ActionFree To PlaySingle-playerMulti-playerCo-op
Current offers · prices in EUR
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Alien Swarm is free to play on Steam. Offers above, if any, are for paid editions or bundles.