IMHO.

Single-player games like HOUND

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

Ranked picks

  1. 1
    Sand in a Box — Steam game cover

    Sand in a Box

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

    Sand in a Box is a 'falling sand' game that simulates thermal flow, electricity, radioactive decay, and gravity. Create art, experiment with physics, and craft your own simulation rules with user-friendly mod support!

    2024IndieSimulationCasual3.99 USDSingle-playerSimilar games →
  2. 2
    Ecosystem Architect — Steam game cover

    Ecosystem Architect

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

    In Ecosystem Architect, build the ecosystem of your dreams and let your imagination run wild. With a vast selection of foliage, animals, and prehistoric creatures, mix-and-match to your heart's content and watch your environment come to life as they interact in an in-depth simulation.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  3. 3
    Lunar Odyssey — Steam game cover

    Lunar Odyssey

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

    Don your xEMU Spacesuit, explore the Orontius Crater, and Lunar Module in an immersive first-person VR experience with out of this world accuracy and interaction. Follow real-life procedures, launch the Apollo-era Lunar Module, play Space Golf, and experience the moon like never before.

    2022SimulationEarly AccessFreeSingle-playerSimilar games →
  4. 4
    Quantum Odyssey — Steam game cover

    Quantum Odyssey

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

    Master the most counter-intuitive logic in existence. Created by the researchers who defined Quantum Literacy, Quantum Odyssey is an open-ended puzzle game where you craft real quantum algorithms. Optimize 500+ challenges, hack other players, and gain insights textbooks can’t provide.

    2025IndieSimulationEarly Access17.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Natural Instincts: European Forest — Steam game cover

    Natural Instincts: European Forest

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

    Protect the environment, and save it from harm! Give commands to the animals, observe their rituals and help them survive. Face different disasters, react to human presence and help the animal kingdom flourish in this unique, environmental experience!

    2021StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    The Sapling — Steam game cover

    The Sapling

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

    The Sapling is a short simulation game where you design your own plants and animals, and put them in a world together. Or you turn on random mutations, and see what evolution does to your ecosystem!

    2019SimulationEarly Access17.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Substrate: Emergence — Steam game cover

    Substrate: Emergence

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

    Grow fluorescent cells that create mesmerizing emergent chaos. Simple mechanics hide deep complexity as cells evolve survival strategies through synergistic interactions. Catalogue successful lines and culture them to develop your own unique biology.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  8. 8
    Galaxy Too Far — Steam game cover

    Galaxy Too Far

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

    Another world is about to become a resource colony for your Creator. Prove your usefulness. Spread your influence across the planet. Take all resources you can reach. Build a base on the surface and in space. Сomplete the construction of an intergalactic beacon to absorb the entire planet.

    2024Indie11.99 USDSingle-playerSimilar games →