IMHO.

Single-player games like Tree House Colony

Below are 10 single-player Steam games similar to Tree House Colony, 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 Tree House Colony page.

Ranked picks

  1. 1
    Generation Ship — Steam game cover

    Generation Ship

    Single-player alternative to Tree House Colony — playable solo, no multiplayer required. Shares Simulation with Tree House Colony.

    As the AI responsible for a Generation Ship, you are humanity's last hope. Build efficient raw material cycles and help your crew in a realistic real-time simulation to survive the challenges of space on their long journey to a new home!

    2026StrategySimulationSingle-playerSimilar games →
  2. 2
    Gateworlds — Steam game cover

    Gateworlds

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

    Gateworlds is a colony sim about exploring and surviving a fantasy wilderness. Find your way in a world of floating islands, strange creatures, and fickle gods.

    StrategyIndieAdventureSingle-playerSimilar games →
  3. 3
    Corsair Cove — Steam game cover

    Corsair Cove

    Single-player alternative to Tree House Colony — playable solo, no multiplayer required. Shares Simulation with Tree House Colony.

    Build a sprawling pirate haven, raise a fleet to explore the high seas, and take on the Crown to keep the Age of Piracy alive! From ale to flintlock pistols, and from scallywags to swashbucklers, you’ll need to manage complex production chains and govern a rowdy crew to reign supreme over the seas!

    2026StrategySimulation39.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Judgment: Apocalypse Survival Simulation — Steam game cover

    Judgment: Apocalypse Survival Simulation

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

    Build, scavenge, craft, and perform occult rituals to survive in a demon-infested, post-apocalyptic colony simulation. Will you survive Judgment day?

    2018StrategyIndieSimulation19.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Ascent of Ashes — Steam game cover

    Ascent of Ashes

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

    A colony sim set in a post-apocalyptic dystopia. Build and defend your base. Manage your survivors. Engage raiders, aliens, Remnant soldiers and other factions in real-time-with-pause combat. Or use stealth to outwit them. Explore the massive world. Survive at all costs

    2025StrategyIndieAdventure14.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Life is Feudal: Forest Village — Steam game cover

    Life is Feudal: Forest Village

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

    LiF:Forest Village is a city builder with survival aspects in a realistic harsh medieval world. Shape, build and expand your settlement, grow various food to prevent your villagers from avitaminosis and starvation. Possess them for additional micromanagement or simply to wander around.

    2017StrategyIndieSimulation24.99 USDSingle-playerSimilar games →
  7. 7
    Whiskerwood — Steam game cover

    Whiskerwood

    Single-player alternative to Tree House Colony — playable solo, no multiplayer required. Shares Simulation with Tree House Colony.

    Establish a home for your industrious mice under the oppressive paw of your cat overlords in this city builder featuring complex simulations, intricate production chains, and the age-old rivalry between cat and mouse.

    2025StrategySimulationEarly Access29.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Nova Roma — Steam game cover

    Nova Roma

    Single-player alternative to Tree House Colony — playable solo, no multiplayer required. Shares Simulation with Tree House Colony.

    The glory of Rome is at your fingertips in this city-building game where you must appease the gods, enact laws, and develop complex supply chains to meet the needs of your citizens.

    2026StrategySimulationEarly Access29.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Transports — Steam game cover

    Transports

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

    Transports is a transportation business simulation game. Build your business empire by building transportation routes for trucks, trains, ships and planes to transport goods between industrial buildings and cities.

    2018StrategyIndieSimulation17.99 USDSingle-playerSimilar games →
  10. 10
    Wartra — Steam game cover

    Wartra

    Single-player alternative to Tree House Colony — playable solo, no multiplayer required. Shares Indie with Tree House Colony.

    Build a civilization from its first settlements into a mighty world power in this turn-based strategy game. Explore uncharted lands, expand your empire, forge lucrative trade relationships, and develop your economy and technology.

    StrategyIndieSingle-playerSimilar games →