Single-player games like Ace of Space
Below are 9 single-player Steam games similar to Ace of Space, 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 Ace of Space page.
Ranked picks
- 1
Orbital Invaders
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
3D Sci-Fi arcade Shoot'em up game. Destroy asteroids and aliens. Shoot them all!3D arena shooter with multiple worlds. Spaceship simulator and shmup arcade style game.
- 2
Protect the Earth
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
You are the best pilot in the space force and the earth needs you to protect itself from an alien attack. Protect the earth and then go to the invader's planet to finish them off once and for all.
- 3
Aero Striker - World Invasion
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
Aero Striker is a highly stylized action-packed flight combat simulator game that is intentionally designed to be easy to make it more enjoyable and less nerve-racking. The aim is to have fun making aliens explode while experiencing the sensation of flying. Let none of the evil aliens escape!
- 4
DarkSpase
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
Galaga meets Tie Fighter meets Elite Dangerous. A sci-fi starfighter combat sim with NASA-accurate Keplerian orbits. Voyage across the Solar System with real-time FTL. Engage Dregg swarms in dynamic PvE encounters. Outmaneuver invaders by pushing Newtonian physics to the limit at 150 m/s.
- 5
Rogue Jet Fighter
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
A fast, intense arcade space shooter where you pilot a lone fighter deep into alien territory to destroy a massive Death Moon station. Dodge asteroids, blast enemy ships, and survive a high‑stakes mission behind enemy lines.
- 6
Mud River
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
Mud River is a horizontal 2D Shoot‘em Up game. The Rio Doce (Sweet River) was a paradise for mankind and animals, but now it has become a territory destroyed by the unscrupulous activities of Dr. Wellin. This is Pacal's first destination, ascending the Rio Doce preventing its complete destruction.
- 7
Space Defense
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
You and your space troop have a tough mission to defend Earth from an alien invasion in this epic space war. Will you be able to guide your troops to victory?
- 8
METEOR COMMANDER
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Casual with Ace of Space.
Retro-inspired arcade-style shooter. Save humanity from incoming waves of flaming hot meteors, alien ships hell-bent on destroying humanity, and the strangeness of space by shooting, blasting and nuking incoming waves of meteors and enemies.
- 9
Hellbreachers
Single-player alternative to Ace of Space — playable solo, no multiplayer required. Shares Action and Indie with Ace of Space.
A journey to the hell and back! Hellbreachers is a retro styled action-platformer with RPG character progression system. Choose one of three heroes and than one of ten specializations, progress through spectacular locations and take on challenging bosses!