Single-player games like Celtreos
Below are 8 single-player Steam games similar to Celtreos, 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 Celtreos page.
Ranked picks
- 1
Apidya' Special
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action with Celtreos.
Apidya is making a comeback in this authentic 24-bit pixel remake, built from the ground up, but utterly faithful to the original.
- 2
TROPHY FLEET
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action and Indie with Celtreos.
Break twelve worlds, steal their cores, and fly them as your fleet. A single-run top-down arcade shooter: thirteen stolen fighters, twelve bosses with real weak points, a run that never pauses, and a leaderboard for every world.
- 3
Space Elite Force
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action and Indie with Celtreos.
Gear up for an intergalactic thrill ride! Space Elite Force is a frenzied space-shooter packed with weapon customization and epic boss battles. Take command of your ship and fight for the survival of humanity!
- 4
Truxton Extreme
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action with Celtreos.
Take down hordes of alien invaders with your Power Shot, Truxton Beam, Thunder Laser, Homing Shot, Star‑mine Shot, and more! Don't forget to breathe as you face off against gigantic bosses in the ultimate battle for humanity’s survival!
- 5
Sky Force Reloaded
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action and Indie with Celtreos.
Sky Force Reloaded is a classic shoot ‘em up experience packed in gorgeous visuals and excellent gameplay. Enjoy flashy explosions, beautiful scenery and massive bosses in single player or local cooperative modes.
- 6
DARIUSBURST Chronicle Saviours
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action with Celtreos.
DARIUSBURST Chronicle Saviours is the latest installment in Taito's DARIUS series of arcade-style shooting games. Blast hordes of alien sea-monsters, and blaze your own trail through branching environments.
- 7
Deathsmiles
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action and Indie with Celtreos.
Deathsmiles is CAVE's bullet-hell shoot-'em-up where you take the role of one of five Angels to defend the magical land of Gilverado from an invasion by Hell itself! Eradicate this devilish assault!
- 8
Syder Arcade
Single-player alternative to Celtreos — playable solo, no multiplayer required. Shares Action and Indie with Celtreos.
Killing zombies never gets old, but sometimes you just need a break. Get back to some serious old-school gaming with Syder Arcade! Syder Arcade is a love letter to Amiga games of the ‘90s, no coins, no upgrade grinding, just your tenacity and a motherload of alien invaders.