Single-player games like Star Horizon
Below are 13 single-player Steam games similar to Star Horizon, 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 Star Horizon page.
Ranked picks
- 1
Space Travellers
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Indie with Star Horizon.
Space Travellers is a unique open-world sandbox space simulator set in the year 2343. Travel the galaxy, trade, explore unexplored worlds, fight, build bases and factories, forge alliances and experience new adventures!
- 2
3030 Deathwar Redux - A Space Odyssey
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Indie with Star Horizon.
3030 Deathwar is a unique mix of Adventure and Space Sim. Explore star systems, mine and hunt pirates in top-down mode. Leave your ship and switch into classic Adventuring mode, where you explore derelicts, talk to shady characters or head over to the space bar for a drink.
- 3
Rebel Galaxy
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Indie with Star Horizon.
Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.
- 4
X Rebirth
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Simulation with Star Horizon.
In the distant future, the X universe faces a period of profound and irrevocable change. While the universe stumbles towards an uncertain future, countless adventures await as new enemies rise in search of power.
- 5
X3: Terran Conflict
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Simulation with Star Horizon.
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!
- 6
No Man's Sky
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Adventure with Star Horizon.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 7
QANGA
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Indie with Star Horizon.
QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance. Tear through the fabric of space to face the Voss, awaken the ancient civilisation, and dare to challenge the Sanglines, born from the bowels of a world that condemned you.
- 8
Elite Dangerous
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Adventure with Star Horizon.
Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.
- 9
Strike Suit Zero
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Indie with Star Horizon.
Pilot the mecha Strike Suit across massive fleet battles where your dogfighting skills decide Earth's fate. Fast, frantic space combat with capital ship destruction, multiple endings, and a universe that's anything but empty. This is space combat reborn.
- 10
Panzer Dragoon: Remake
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Adventure with Star Horizon.
A new, remade version of the Panzer Dragoon game – true to the original, with improved graphics and controls, that suit modern gaming standards!
- 11
STAR WARS™: Rebel Assault I + II
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Simulation with Star Horizon.
ake your T16 through Beggar's Canyon...Then dodge asteroids and blast TIE fighters in a deep space rumble... tackle a fleet of menacing AT-ATs on the icy tundra of Hoth...and ultimately annihilate Vader and the evil Empire with a kamikaze trench run on the infamous Death Star.
- 12
Spire Blast
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action and Indie with Star Horizon.
Spire Blast is a unique physics-based puzzle game in which you match colors, shoot and blast towers. Step into the colourful world of Spire Blast. Work with your ever-hungry dragon companion to collapse numerous mysterious towers.
- 13
Castle Crumble
Single-player alternative to Star Horizon — playable solo, no multiplayer required. Shares Action with Star Horizon.
Mysterious castles appeared all over the world. Use powerful weapons to destroy them in creative ways. Shoot projectiles, plant explosives and wreck havock in the world where every brick is physically simulated.