IMHO.

Single-player games like Sunborn

Below are 9 single-player Steam games similar to Sunborn, 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 Sunborn page.

Ranked picks

  1. 1
    CQ: Calling Any Station — Steam game cover

    CQ: Calling Any Station

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Simulation with Sunborn.

    An idle/incremental game about a lone radio operator keying into a silent universe. Click or walk away, both work just as well. Build your station, log distant contacts, retune to grow stronger, and slowly decode what answers back.

    2026IndieSimulationCasual5.09 USDSingle-playerSimilar games →
  2. 2
    Orbosis Gloriosis — Steam game cover

    Orbosis Gloriosis

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Simulation with Sunborn.

    A physics-based incremental game where you split and merge orbs

    2026ActionIndieSimulation4.99 USDSingle-playerSimilar games →
  3. 3
    Void Core — Steam game cover

    Void Core

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Simulation with Sunborn.

    Start as a microscopic speck, become the end of everything. Void Core is a minimalist sci-fi idle game where you control a black hole. Harvest matter, bend spacetime to automate your growth, and consume entire galaxies. Consume. Grow. Evolve.

    2026IndieSimulationCasualSingle-playerSimilar games →
  4. 4
    Random Horse Derby — Steam game cover

    Random Horse Derby

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Simulation with Sunborn.

    A minimalist and automatic horse racing game. Choose between 5 horses to get as many victories as possible in order to climb the world leaderboard.

    2026SportsIndieSimulation0.89 USDSingle-playerSimilar games →
  5. 5
    Infinity Bounce — Steam game cover

    Infinity Bounce

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Simulation with Sunborn.

    Turn the galaxy into a chaotic pinball machine to feed a voracious space cat in this physics-based incremental game. Expand and upgrade your arsenal of various celestial bodies and stuff the cat to the brink of a big bang.

    StrategyIndieSimulationSingle-playerSimilar games →
  6. 6
    The Legend of Fireball — Steam game cover

    The Legend of Fireball

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Simulation and Free To Play with Sunborn.

    Aim, charge, and unleash powerful fireballs to smash through everything in your path. Upgrade your power, collect fireballs, costumes, relics, and pets, then destroy bigger targets to become a legendary fireball master.

    2026SimulationRPGFree To PlayFreeSingle-playerSimilar games →
  7. 7
    Elandrake — Steam game cover

    Elandrake

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Simulation with Sunborn.

    Elandrake is an incremental, twin-stick shooter game where you protect a cosmic entity as it emerges from another reality. Consume matter to gain abilities and use them to blast fleets back to where they came from!

    2026ActionIndieSimulationSingle-playerSimilar games →
  8. 8
    Around The Core — Steam game cover

    Around The Core

    Single-player alternative to Sunborn — playable solo, no multiplayer required. Shares Indie and Casual with Sunborn.

    A space-themed incremental shooter where destruction fuels growth. Annihilate asteroids, harvest wealth, and climb a massive upgrade tree.

    2026IndieCasual3.39 USDSingle-playerSimilar games →
  9. 9
    Terrors of War — Steam game cover

    Terrors of War

    Single-player alternative to Sunborn — playable solo, no multiplayer required.

    Base-building WW2 RTS. The Reich is collapsing, and burying something the Allies were never meant to find. Command US or Wehrmacht forces. Run supply lines under fire. Push forward depots. Unleash artillery and superweapons. Fight the war you know, while you still can.

    StrategyEarly AccessSingle-playerSimilar games →