Alien Swarm: Reactive Drop
Co-operative top-down shooter game available for free. An epic bug hunt featuring a unique blend of co-op play and squad-level tactics.
Estimated lifetime revenue
Free-to-play
Revenue comes from in-game items and microtransactions, which our price-based model doesn't estimate. The player count below is how many people own it, not what they spent.
Est. players
723.9K
people who own it
Reviews
23.8K
Review score
95%
9.5/10
Concurrent players
364
read Sep 19, 2026, 15:00 UTC
About
About the game
Alien Swarm: Reactive Drop extends Alien Swarm, bringing more of everything: maps, aliens, game modes, guns... And most importantly Steam Workshop support.
- Tactical co-op for up to 8 players with a top-down perspective
- Steam Workshop support for community maps and challenges
- New co-operative campaigns
- Challenges: Modifications of the game, just like Mutations in Left 4 Dead 2
- PvP: Deathmatch, Gun Game, Instagib, and Team Deathmatch
- Singleplayer: Play with improved bots on all our official maps
- New Aliens: HL2 antlion guards and more
- New Weapons: Bulldog, Devastator, and Combat Rifle, with more to come
- Over 100 Steam achievements
- Leaderboards: compete with your friends for the fastest mission completion
- Improved spectating: see hacking minigames and mouse movements in real time
Genres
