Single-player games like Universe Horizon
Below are 9 single-player Steam games similar to Universe 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 Universe Horizon page.
Ranked picks
- 1
Astrodle
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Indie with Universe Horizon.
Ready for some chill time in space? Astrodle has you covered. Watch the numbers soar as you upgrade your ship and travel the stars. Oh, and you might just become a god.
- 2
Galaxy Idle Clicker
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Indie with Universe Horizon.
Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe!
- 3
Particul
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Universe Horizon.
Click to mine particles and watch your pile grow. Turn resources into profit, automate extraction, research new technologies and trade. Can you mine the rarest particle and ascend? There is just one way to find out.
- 4
Unnamed Space Idle
Single-player alternative to Universe Horizon — playable solo, no multiplayer required.
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.
- 5
Starvester
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Strategy with Universe Horizon.
A short incremental game about expanding a star-system wide factory to build giant megastructures in space. Deploy swarms of drones, mine resources, unlock upgrades and harvest the power of the stars!
- 6
Orbitmine
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Universe Horizon.
Orbit a planet, fire your laser, and mine it to the core. Upgrade your ship and conquer seasonal hazards across four unique zones. A satisfying incremental mining game set in space.
- 7
Row Divers
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Universe Horizon.
Row Divers is a short, experimental incremental game about diving into dungeons in the form of rows, shooting enemies, collecting resources, and upgrading your bow to conquer the depths!
- 8
LORED
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Universe Horizon.
An idle game about collecting cancer with quirky stickfigures!
- 9
Melvor Idle
Single-player alternative to Universe Horizon — playable solo, no multiplayer required. Shares Adventure and Indie with Universe Horizon.
Inspired by RuneScape, Melvor Idle takes the core of what makes an adventure game so addictive and strips it down to its purest form! This is a feature-rich, idle/incremental game combining a distinctly familiar feel with a fresh gameplay experience. Maxing 20+ skills has never been more zen.