- Steam pricePrice
- Free to play
- Release
- April 20, 2017
- Session GoalsGoals
- Platforms
How co-op works
Up to eight players share top-down campaign missions, coordinating movement and overlapping fields of fire while completing objectives against alien swarms. Optional Challenges modify the rules, and friendly fire makes explosives, firing lanes, and each marine position a squad responsibility.
About this game
Alien Swarm: Reactive Drop is a free-to-play top-down shooter that places squads of space marines against relentless swarms of alien creatures. This is true cooperative play, where up to eight players must work together to survive mission objectives, unlock doors, and hold off waves of hostiles in claustrophobic corridors and open battlegrounds.
Read moreShow less
Each player selects a class with distinct weapons, abilities, and gear, from medics and technicians to heavy gunners. Success depends on overlapping fields of fire, coordinated pushes, and quick communication when a teammate goes down or an objective needs defending. The constant pressure and the need to cover angles together make every mission feel like a tactical firefight.
The game supports online co-op and LAN play, with full controller support and a massive library of community-made campaigns. Sessions range from quick 10-minute runs to extended gauntlets, and the teamwork required keeps squads tight and engaged from deployment to extraction.
Similar games
See more similar gamesAppears in these lists
Frequently Asked Questions
How many players can play together in co-op?
Up to eight players can team up in online or LAN co-op. The game is built around squads working together to survive waves of aliens and complete mission objectives.
Is the game really free, or are there paid features?
Alien Swarm: Reactive Drop is completely free-to-play with no hidden costs. It's developed and published by the Reactive Drop Team as a free community project.
Does each player have a different role or class?
Yes, players choose from different classes including medics, technicians, and heavy gunners. Each class has distinct weapons, abilities, and gear, so team composition and coordination matter.
How long does a typical mission take?
Sessions can range from quick 10-minute runs to longer extended campaigns, depending on which mission or community-made content you choose.
Can I play with a controller?
Yes, the game has full controller support, so you can play with either keyboard and mouse or a gamepad.