Single-player games like Alien Swarm: Reactive Drop
Below are 8 single-player Steam games similar to Alien Swarm: Reactive Drop, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Alien Swarm: Reactive Drop page.
Ranked picks
- 1
Alien Swarm
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action and Free To Play with Alien Swarm: Reactive Drop.
Co-operative multiplayer game and complete code base available for free.
- 2
Alien Breed: Impact
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
Experience the explosive science fiction arcade-shooter that resurrects a much revered franchise in an epic single player and co-op multiplayer campaign.
- 3
EARTH DEFENSE FORCE 5
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
Stand and fight for humanity. This arcade shooter takes place in the year 2022, as the Earth Defense Force fends off an all-out attack by unknown life forms. Become an EDF soldier, battle against endless hordes of immense enemies, and restore peace to the earth.
- 4
Deep Rock Galactic
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!
- 5
Don't Starve Together
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
Fight, Farm, Build and Explore Together in the standalone multiplayer expansion to the uncompromising wilderness survival game, Don't Starve.
- 6
Risk of Rain 2
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
Escape a chaotic alien planet by fighting through hordes of frenzied monsters – with your friends, or on your own. Combine loot in surprising ways and master each character until you become the havoc you feared upon your first crash landing.
- 7
Left 4 Dead 2
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.
- 8
HELLDIVERS™ Dive Harder Edition
Single-player alternative to Alien Swarm: Reactive Drop — playable solo, no multiplayer required. Shares Action with Alien Swarm: Reactive Drop.
HELLDIVERS™ is a hardcore, cooperative, twin stick shooter. As part of the elite unit called the HELLDIVERS, players must work together to protect SUPER EARTH and defeat the enemies of mankind in an intense intergalactic war.