Single-player games like Galactagon
Below are 8 single-player Steam games similar to Galactagon, 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 Galactagon page.
Ranked picks
- 1
Micron Survivor
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
Micron Survivor is a survival game with rogue-lite elements where you play as alien microorganisms under the microscope. Evolve, unlock research objectives, find symbiotic weapons, upgrade your builds, and fight hordes of terrestrial organisms to rule the microcosm.
- 2
Starwhisker
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
Magic cats in space fighting aliens. Light is your weapon, and the Void is hungry. Shift between wavelengths of light, discover powerful upgrades. Help Luma, the last Starwhisker restore hope to a universe being consumed by darkness.
- 3
Fading Reel
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
A sepia Roguelike — lead a chained squad through 22 waves. Map events split your line, milestone recruits add firepower. Linked Blink, run upgrades, 19 Evolutions, and a permanent meta tree carry you to the final Boss Hydra.
- 4
GrindFall
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
A thrilling Co-op Action Roguelite for 1-4 players! Play as mischievous ghosts, create insane weapon synergies, catch humans, and turn them into pumpkins. Deliver your harvest to the crypt, expand the map, and unleash vibrant chaos in this Bullet Heaven!
- 5
I'm No Demonlord
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
"I'm No Demonlord" is a Roguelike shooter bullet hell game. High freedom in mechanics leads to unique playthroughs. As a demon-possessed hero, battle enemies, grow, and unveil dark schemes. Can he accept his new role? Save "kinds" or destroy "outsiders"? Good or evil? The choice is yours.
- 6
Eternal Onslaught
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
A vampire-survivors-style roguelike where bosses arrive every 90 seconds and the Butcher every 5 minutes Pick a hero, pick a weapon, then survive as the screen fills with the unkilled
- 7
Space PiouPiou
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
Blast through endless waves of evil space cat-liens in this chaotic bullet heaven and hell roguelike! Upgrade your tiny PiouPiou into a feathered weapon of mass destruction and survive the cosmic madness for as long as possible.
- 8
Orbit Run
Single-player alternative to Galactagon — playable solo, no multiplayer required. Shares Action with Galactagon.
Orbit Run is an arcade sci-fi game with roguelike elements, in which orbiting asteroids are your only weapons. Catch asteroids and combine them to unlock their run-altering abilities. Skillfully manoeuvre to dodge attacks and land massive asteroid strikes to defeat the ever-increasing waves of foes.