Single-player games like Space Shooter
Below are 8 single-player Steam games similar to Space Shooter, 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 Space Shooter page.
Ranked picks
- 1

Project Survivor
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
A retro style game that can be played in 2D platformer mode and top-down mode. Hunt monsters, collect coins, and buy weapons to become stronger. Play with 3-classes and a variety of weapons. Enjoy cute retro style pixel art that you see on a nostalgic CRT monitor filter.
- 2

Phrenetic Shooting Reunion
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
[CONTENTS] A playable shooting game "PHRENETIC SHOOTING REUNION" + All future updates/bug fixes. Phrenetic Shooting is a retro tasted shooting game. This game provides an exciting experience for retro 2D shooting game funs.
- 3

ASTRO ACE
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
ASTRO ACE is a retro-style addictive arcade space shooter. From the distant universe, an evil alien fleet is invading the solar system. You will have to ride a powerful spaceship and fight against endless waves of enemies.
- 4

Blood Red Fists
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
Explore a vast and crime ridden city, fight your enemies in first person mode, talk to random strangers, steal and sell various items, gamble with your money, gain experience and spend it on helpful skills. But above all, try to stay alive in this 2d retro beat 'em up.
- 5

orbital defence unit
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
An endless rain of asteroids is approaching.Defend your home planet to the bitter end. Survive as long as you can. Orbital defense unit returns as a 2D shooter to the roots of the arcade classic Asteroids.
- 6

DOLPHIN HUSTLE
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
Somewhere in the wastelands of the ocean lives a young dolphin. He likes to get high and hang out. All he does is hang out. But it so happened that the cyber Internet sucked him in. It's time to end this.
- 7

Clobber Barons
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
A short, arcade-style throw back to the beat 'em ups of the early 90's. Use the money you beat out of wealthy criminals to charge your power attacks while attempting to find the mastermind behind the criminal racket taking over your city.
- 8

THROWDOWN BOXING 2
Single-player alternative to Space Shooter — playable solo, no multiplayer required. Shares Action and Indie with Space Shooter.
Thirteen of the most gifted and powerful boxers on earth square-off in the world famous Throwdown Boxing Association competition! Choose your Kid Titan, prove you are the best of the best and help save the world from the villainous Ned "Cry Baby" Nerdman!