IMHO.

Single-player games like Spacetime Dimension

Below are 8 single-player Steam games similar to Spacetime Dimension, 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 Spacetime Dimension page.

Ranked picks

  1. 1
    I Am a Rock — Steam game cover

    I Am a Rock

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Indie with Spacetime Dimension.

    A rock's solar system odyssey.

    2022StrategyIndieAdventure0.99 USDSingle-playerSimilar games →
  2. 2
    Tower! Simulator 3 — Steam game cover

    Tower! Simulator 3

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Indie with Spacetime Dimension.

    Immerse yourself in an ultra-realistic environment that brings the challenges of air traffic control right to your fingertips. With brand-new lighting system, intuitive 2D graphical user interface (GUI), improved voice recognition, 9 airports included, Tower! Sim 3 sets a new gold standard.

    2022StrategyIndieSimulation59.99 USDSingle-playerSimilar games →
  3. 3
    Edge Of Endless — Steam game cover

    Edge Of Endless

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Strategy with Spacetime Dimension.

    In a boundless desert, one finds oneself lost, compelled to continue onwards. Discover where they are headed. Along this journey, you'll uncover the story of (you), and see where their tale concludes. Hopefully

    2024ActionStrategyIndie4.99 USDSingle-playerSimilar games →
  4. 4
    Starlocked — Steam game cover

    Starlocked

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Indie with Spacetime Dimension.

    A voxel-based first-person roguelite miner set in an alternate future where the Cold War never ended. You take on the role of a convict forced to labor in a space prison. Fly out into the machine infested asteroid field and gather resources to pay off your debt.

    2026ActionIndieAdventureFreeSingle-playerSimilar games →
  5. 5
    vTERM ATC Simulator — Steam game cover

    vTERM ATC Simulator

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Simulation with Spacetime Dimension.

    vTERM: Your ultimate ATC radar simulator! Command a fictional airport with a 27/09 runway layout. Navigate realistic scenarios with precision using the STARS scope interface.

    2024StrategySimulation13.99 USDSingle-playerSimilar games →
  6. 6
    Discord Rich Me! Engine — Steam game cover

    Discord Rich Me! Engine

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Indie with Spacetime Dimension.

    A complete Discord Rich Presence customizer.

    2022ActionIndieAdventure1.99 USDSingle-playerSimilar games →
  7. 7
    Atari 50: The Anniversary Celebration — Steam game cover

    Atari 50: The Anniversary Celebration

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Action and Adventure with Spacetime Dimension.

    Atari 50: The Anniversary Celebration takes players on an interactive journey through 50 years of video games via interviews with designers, developers and industry leaders, documentary footage, product design documents, high-res original artwork, and a curated list of more than 90 playable games.

    2022ActionAdventureCasual39.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Empyrion - Galactic Survival — Steam game cover

    Empyrion - Galactic Survival

    Single-player alternative to Spacetime Dimension — playable solo, no multiplayer required. Shares Strategy and Indie with Spacetime Dimension.

    Build and explore in a true space sandbox survival adventure. Construct mighty capital vessels, sprawling planetary settlements, and vast space stations in your galactic journey to discover the mysteries of Empyrion!

    2020StrategyIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →