IMHO.

Single-player games like Vanguard Galaxy

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

Ranked picks

  1. 1
    Space Travelers — Steam game cover

    Space Travelers

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

    Mine asteroids, trade minerals and chart an endless, procedurally generated galaxy in a relaxed 2D space sim. Then pin it to your desktop as a live wallpaper: your ship keeps flying, mining and discovering while you work

    IndieSimulationCasualSingle-playerSimilar games →
  2. 2
    Inspiral: Echoes of Gravity — Steam game cover

    Inspiral: Echoes of Gravity

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

    Start as an asteroid, grow by absorbing other celestial bodies to become a planet, a star, and ultimately a black hole. Experience realistic gravity and orbital physics in an ever-evolving sandbox universe.

    2025StrategyIndieSimulation3.99 USDSingle-playerSimilar games →
  3. 3
    Aeons Odyssey — Steam game cover

    Aeons Odyssey

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

    An idle management game where you craft equipment, found colonies, collect ships and manage an interstellar economy with fellow captains online. Your autopilot will do the tedious work of scanning planets, you focus on decisions. Includes an optional companion mode to keep track of your progress.

    2026StrategySimulationSingle-playerSimilar games →
  4. 4
    Weird Wormholes — Steam game cover

    Weird Wormholes

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

    Weird Wormholes is a casual game about traveling through wormholes to try and get back home. Use your ship to mine planets for resources and process these resources into components to enable your travels.

    2024IndieCasual3.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Galactic Simulator 3 — Steam game cover

    Galactic Simulator 3

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

    Galactic Simulator 3 is a space exploration and evolution sim inspired by the Fermi Paradox and Great Filter theory. Scan uncharted star systems, gather resources and samples, establish outposts and stargates, and witness the rise and fall of civilizations across an ever-evolving galaxy.

    2026StrategyIndieSimulation5.59 USDSingle-playerSimilar games →
  6. 6
    StarWorks — Steam game cover

    StarWorks

    Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Simulation and Early Access with Vanguard Galaxy.

    A space sim where you build the industry that produces your rockets, then fly them. Genuinely integrated orbits, aerodynamics solved part by part, procedural planets you can walk. From first mine to first interstellar flight.

    SimulationEarly AccessSingle-playerSimilar games →
  7. 7
    Above Earth — Steam game cover

    Above Earth

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

    Above Earth is a science fiction survival game. Experience a struggle for life in the fragile artificial environment of a damaged space station.

    2019ActionStrategyIndie17.99 USDSingle-playerSimilar games →
  8. 8
    Bouncekraft — Steam game cover

    Bouncekraft

    Single-player alternative to Vanguard Galaxy — playable solo, no multiplayer required. Shares Strategy with Vanguard Galaxy.

    A physics-driven automation game where your workers bounce between buildings like pinballs. Design bounce paths, build production chains, and survive asteroid waves.

    StrategySingle-playerSimilar games →
  9. 9
    Elite Dangerous — Steam game cover

    Elite Dangerous

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

    Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.

    2015ActionStrategyAdventure19.99 USDDeck PlayableSingle-playerSimilar games →