Free games like Alien Shooter
Below are 8 free-to-play Steam games similar to Alien Shooter, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Alien Shooter page.
Ranked picks
- 1
Alien Swarm
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action with Alien Shooter.
Co-operative multiplayer game and complete code base available for free.
- 2
SAS: Zombie Assault 4
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and RPG with Alien Shooter.
Purge the undead! Intense action-shooter with deep rpg elements, including upgradeable guns and armor, unique class skills, and class special abilities. Entire game can be played single player or as a 4-player online co-op game, including PvP events like Last Man Standing.
- 3
10 Minutes Till Dawn
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and Indie with Alien Shooter.
Shoot down an ever growing horde of Lovecraftian monsters. Choose from a variety of upgrades to create unique and game-breaking builds. Unlock a diverse cast of characters and weapons with unique powers.
- 4
I MAED A GAM3 W1TH Z0MB1ES 1N IT!!!1
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and Indie with Alien Shooter.
A top down twin stick zombie slaying shooter that you are sure to play again and again!
- 5
Halls of Torment: Prelude
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and Indie with Alien Shooter.
Slay hordes of terrifying monsters in this horde survival roguelite. Descend into the Halls of Torment where the Lords of the underworld await you. Treasures, magical trinkets, and a growing cast of heroes will grant you the power to vanquish these horrors from beyond. How long can you survive?
- 6
Relic Hunters Zero: Remix
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and Indie with Alien Shooter.
Relic Hunters Zero: Remix is a remaster of the FREE 1 million player hit game about blasting evil space ducks and turtles with tiny cute guns. It’s fast, it’s tactical, and feels deliciously smooth to play. Unlock new weapons, characters and relics to defeat the Ducan Commander!
- 7
Hellbound: Survival Mode
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and Indie with Alien Shooter.
FULL GAME NOW AVAILABLE. GO GET IT! This is the Free Survival Mode for Hellbound: a '90s style First Person Shooter, made 30 years later… but just a glimpse of the full game, go check it out!
- 8
Gatekeeper: Infinity
Free-to-play alternative to Alien Shooter — no purchase or trial window. Shares Action and Indie with Alien Shooter.
Prologue version of the game Gatekeeper. Gatekeeper: Infinity is a fast-paced rogue-lite shooter where you'll search for the stolen Heart of the Universe and battle machine enemies! Play solo or join forces with friends in co-op mode.