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

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.
- 2

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.
- 3

Hive Jump 2: Survivors
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and RPG with Universe X.
Become an agent of vengeance in this bullet-heaven action roguelite! You are the lone survivor of your squad, on an alien planet with just your weapon, a jetpack, and the courage to keep fighting. Kill off alien swarms and transform their valuable guts into explosive upgrades and vital utilities.
- 4

Killsquad
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and RPG with Universe X.
Hack and slash? Check. Twin-stick-shooter? Check. 4 player coop to slay hordes of aliens & bosses with your friends? Check. Skills, upgrades, weapons, gears, talismans and more to make you stronger? Check. Wake up, bounty hunter. We have a mission for you. Time to clean up the scum of the galaxy.
- 5

Nuclear Throne
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and RPG with Universe X.
Nuclear Throne is a post-apocalyptic roguelike-like top-down shooter. Not 'the final hope of humanity' post-apocalyptic, but 'humanity is extinct and mutants and monsters now roam the world' post-apocalyptic. Can you reach the Nuclear Throne?
- 6

Disjunction
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and RPG with Universe X.
In a city driven by corruption, three hardened citizens rise to uncover a conspiracy threatening its fate. Define your playstyle and engage in lethal high-octane combat, or keep out of sight in gripping stealth action.
- 7

X3: Terran Conflict
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Strategy with Universe X.
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!
- 8

The Riftbreaker
Single-player alternative to Universe X — playable solo, no multiplayer required. Shares Action and Adventure with Universe X.
The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.