Single-player games like Retronaut
Below are 8 single-player Steam games similar to Retronaut, 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 Retronaut page.
Ranked picks
- 1
Approaching Infinity Survivors
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
A Bullet-Heaven roguelike in the Approaching Infinity universe with both spaceship and away team missions. The exit of the galaxy's dominant races left a power vacuum that everyone wants to fill. Survive, pick a side, or kill'em all. No time to think when the horde's advancing.
- 2
SteelGuard
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
Pilot customizable mechs in an epic battle against hordes of enemiesor dive into intense PvP battles where precision aiming can turn the tide, or let your mech's auto-firing system handle the heat of combat. With rogue-lite elements, each run offers a unique challenge and opportunity for growth.
- 3
Space Show edition 17
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
Space Show is an explosive space shoot’em up blending fast-paced arcade action with roguelite progression. Destroy waves of asteroids, battle enemy fleets, and defend Earth in an endless war where only survival… and glory matter!
- 4
Homesider Survivors
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
HOMESIDER SURVIVORS is a single player survivor-like auto-shooter. You find yourself far from home against countless hordes of aliens...but they're the ones who have to survive, because they kidnapped the wrong guy. Kill, die, level up, and try again until you get home.
- 5
PNR: Point of No return
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
You don't dodge. You push through. PNR: Point of No Return is a space opera roguelite where you blast through enemy fleets head-on, forging a new loadout every sortie. Build your arsenal mid-battle, come back alive, hit the jackpot on the Slingshot, and do it all again.
- 6
Gravity Slugger
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
Gravity Slugger is an arcade-style wave defense game where you use gravity and orbital mechanics to fling projectiles at attacking enemy spaceships. Dodge enemies, gather salvage, and upgrade your skills with chaotic and deadly abilities in this physics-based 2D game.
- 7
FOXFIRE
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
Full Thrust, Full Inertia, Full Auto! FOXFIRE is a top-down sci-fi survivors-like with space physics and a devastating arsenal of evolving weaponry. Customize your ship and tear through alien swarms as routine recon missions descend into bullet hellscapes.
- 8
Astrum Vanguard
Single-player alternative to Retronaut — playable solo, no multiplayer required. Shares Action with Retronaut.
In Astrum Vanguard, a 2D horde-survival with bullet hell components, you pilot and upgrade your spaceship to defeat countless alien creatures. Survive the endless onslaught in the cosmic battlefield!