Free games like Galaxy Annihilation
Below are 8 free-to-play Steam games similar to Galaxy Annihilation, 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 Galaxy Annihilation page.
Ranked picks
- 1
Chicken Invaders Universe
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
A deliciously addictive core of finger-blistering shooting action, surrounded by delectable morsels of galactic exploration, spacecraft customization, and community competitions.
- 2
Echoes+
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
Echoes+ is an intense retro action space shooter that will test your reaction and concentration levels to the max!
- 3
SQUIDS FROM SPACE
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
SQUIDS FROM SPACE is an 8v8, team-based PvP top-down shooter where humans and the sinister Squid aliens wage war for the future of the Earth!
- 4
Gamma Bros
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
The original 8-bit twin-stick space shooter about brotherly love, available to play for free.
- 5
Calamari Clash
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
Calamari Clash is a multiplayer versus game which takes you into the role of a Calamartian who crashed on an unknown planet along with its companions. Dash it out against each other to charge the spaceship’s battery and escape. Only one can escape… who will it be?
- 6
Recursive Hate - Spider Hell
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
Try to survive in Spider Hell. Fight with big, realistic and terrifying spiders and versus swarms with literally thousands of spiders.
- 7
Rocky Mayhem
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
Systems are down and require time to repair, leaving you with a basic gunship with no hopes of escaping an aggressive asteroid event. Will you be able to survive the increasingly difficult 6 minutes to repair the ship's functions and escape? Also discover a variety of genres, all in one game!
- 8
In Extremis
Free-to-play alternative to Galaxy Annihilation — no purchase or trial window. Shares Action and Indie with Galaxy Annihilation.
In Extremis is a challenging and provocative shoot'em up about finding yourself in the chaos of the universe.