Alien Swarm: Reactive Drop: split-screen and player count

Twin Stick Shooter · Top-Down Shooter · Class-Based

A free top-down squad shooter where marines clear alien-infested bases with flamethrowers, sentry guns and careful teamwork.

Who can play

SteamPrice on SteamPlay free

Free to play

Each player picks a marine class such as officer, medic or tech, and missions lean on all of them: the tech hacks doors, the medic heals, and friendly fire punishes sloppy aim.
Bots fill empty slots, and there are deathmatch modes when the group wants to turn on each other.
It is free on Steam, so nobody has to buy anything.

94%

Very positive on Steam

68 playing on Steam, counted dailySteam Deck Unsupported

No split-screen. Online for up to 8 on PC. Free to play. LAN play for up to 8 on PC. 94% positive of 24,000 Steam reviews.

Updated October 27, 2026

Does Alien Swarm: Reactive Drop have couch co-op?: No. Alien Swarm: Reactive Drop has no same-screen multiplayer; play it together online instead.
How many players can play Alien Swarm: Reactive Drop together?: Local co-op and versus on separate screens for up to 8 on PC. Online co-op and versus for up to 8 on PC.
Do you need two copies of Alien Swarm: Reactive Drop?: No. It's free to play.; One of 1,371 co-op games where one copy is enough
Can you play the Alien Swarm: Reactive Drop story together?: Yes: the main campaign is playable together on a local network and online.
What platforms is Alien Swarm: Reactive Drop on?: PC.; One of 3,994 co-op games
Does Alien Swarm: Reactive Drop work on Steam Deck?: No: Steam rates it Unsupported on Steam Deck.
Is Alien Swarm: Reactive Drop free?: Yes, it's free to play.

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