IMHO.

Single-player games like Cube Universe

Below are 8 single-player Steam games similar to Cube Universe, 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 Cube Universe page.

Ranked picks

  1. 1
    PlanetSmith — Steam game cover

    PlanetSmith

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie and Early Access with Cube Universe.

    A sandbox survival RPG set on fully spherical hex worlds. Crash-land on an uncharted planet, craft and build to survive, uncover what infected the solar system, then build a ship and fly seamlessly to other planets. No loading screens. No edges.

    IndieAdventureCasualSingle-playerSimilar games →
  2. 2
    Necesse — Steam game cover

    Necesse

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie and RPG with Cube Universe.

    Build, quest, and conquer across an infinite procedurally generated world. Play alone or with friends as you establish a settlement and explore deep dungeons, fight monsters and bosses, mine rare ores, craft magical equipment, recruit specialists for your colony, and more!

    2025ActionIndieAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    7 Days to Die — Steam game cover

    7 Days to Die

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie with Cube Universe.

    7 Days to Die is an open-world game that is a unique combination of first-person shooter, survival horror, tower defense, and role-playing games. Play the definitive zombie survival sandbox RPG that came first. Navezgane awaits!

    2024ActionStrategyIndie44.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Creativerse — Steam game cover

    Creativerse

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie with Cube Universe.

    A sandbox adventure game as big as your imagination.

    2017ActionIndieAdventure24.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Soulmask — Steam game cover

    Soulmask

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie and RPG with Cube Universe.

    Don the Ancient Mask. Wield the power of gods. Possess any of your tribespeople, recruit followers, and build a thriving automated civilization. Survive, expand, and forge your own legacy across a vast ancient open world — together with friends.

    2026IndieAdventureSimulation29.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Wayward — Steam game cover

    Wayward

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie and RPG with Cube Universe.

    You awake to discover yourself no longer in the company of good men or a fine seafaring vessel. Treasure... you remember something about treasure. Wayward is a challenging turn-based, top-down, wilderness survival roguelike. Explore, build, and most importantly survive in these unforgiving lands.

    2016IndieAdventureSimulation7.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    ARK: Survival Ascended — Steam game cover

    ARK: Survival Ascended

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie with Cube Universe.

    ARK is reimagined from the ground-up into the next-generation of video game technology with Unreal Engine 5! Form a tribe, tame & breed hundreds of unique dinosaurs and primeval creatures, explore, craft, build, and fight your way to the top of the food-chain. Your new world awaits!

    2023ActionIndieAdventure44.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Starship EVO — Steam game cover

    Starship EVO

    Single-player alternative to Cube Universe — playable solo, no multiplayer required. Shares Indie with Cube Universe.

    Mine and craft your way to orbit, build your own starship and explore a vast, dangerous galaxy alongside your crew. For players who love a meaningful survival progression, a unique and elegant building system, and epic space-opera scale.

    2020ActionIndieAdventure24.99 USDDeck PlayableSingle-playerSimilar games →