Single-player games like Universe X
Below are 8 single-player Steam games similar to Universe X, 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 Universe X page.
Ranked picks
- 1
Deep Space Treasure
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Strategy and Adventure with Universe X.
This is a 2D side-scrolling sandbox survival game built on pure procedural generation and mining. There is no map and no hand-holding. Just your rocket, your drill, and an infinite universe. Mine resources, craft gear, and build bases while facing endless roguelike survival challenges.
- 2
Starcom: Unknown Space
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Adventure with Universe X.
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.
- 3
Get Off My Space!
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Strategy with Universe X.
Get Off My Space! is a tower defense game where you rely on skillful tower placement and resource management to beat upcoming dangers of the galaxy. Combining strategy and micro-managing fire groups, you will overcome the hardest level objectives.
- 4
Silent Sector
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Simulation with Universe X.
Oldschool action open-world sci-fi with a unique storyline, frenetic battles, crude humor, loose morals and cows.
- 5
PewPew!
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Simulation with Universe X.
PewPew! - move, shoot and upgrade!
- 6
Nanoplanet Survivors
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Adventure with Universe X.
Nanoplanet Survivors is a heart-pounding bullet hell survival game set on a hostile planet. Battle relentless waves of alien foes and adapt with powerful upgrades and unique character abilities. Epic boss fights make every playthrough a thrilling challenge. Can you emerge as the ultimate survivor?
- 7
N.E.O.N. HORIZON
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Adventure with Universe X.
Survive 100 increasingly dangerous waves in a sci-fi roguelite shooter where every decision shapes your ship. Upgrade your systems, discover powerful relics, forge unique synergies, and uncover the mystery that awaits beyond the Horizon.
- 8
Solar Sails: Space Pirates
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and RPG with Universe X.
Solar Sails is a space action RPG with steampunk ships and cosmic ducks. Control a pirate ship, plunder the royal navy, launch a scout duck to search for treasures, upgrade your ship with alien technologies, and sail onwards to unveil the darkest secrets of the universe.