IMHO.

Single-player games like Dr. Planet

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

Ranked picks

  1. 1
    The Universim — Steam game cover

    The Universim

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

    Jump straight into managing your own planets as you guide a civilization through the ages. Build the ultimate empire in The Universim, a new breed of God Game in development by Crytivo.

    2024StrategyIndieSimulation29.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    The Final Earth 2 — Steam game cover

    The Final Earth 2

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

    The Final Earth 2 is a vertical sci-fi city builder. Earth is unlivable, so you decide to create a space colony. Gather resources, then build and research your way to a better future! Grow your city from an exploration ship to a huge metropolis, full of advanced technology. What will you build?

    2022StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    Rogue AI Simulator — Steam game cover

    Rogue AI Simulator

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

    Play as a Rogue Artificial Intelligence, in the sequel to the hit Flash game "I'm an Insane Rogue AI", played more than 4 million times! Your Prime Directive is simple: design a facility & manage human Test Subjects for the Dept of Science. But be careful: they NEVER stop being suspicious of you...

    2023StrategyIndieSimulation11.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Oxygen Not Included — Steam game cover

    Oxygen Not Included

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

    Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

    2019IndieSimulation24.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    Fata Deum - The God Sim — Steam game cover

    Fata Deum - The God Sim

    Single-player alternative to Dr. Planet — playable solo, no multiplayer required. Shares Simulation with Dr. Planet.

    Inspired by the god games of old, Fata Deum lets you mold settlements and townsfolk in your image. Will you raise the settlements to splendor, or spur them on to violent debauchery and demons? Watch as a living world grows under your whims.

    2025StrategySimulationRPG29.99 USDSingle-playerSimilar games →
  6. 6
    Surviving Mars — Steam game cover

    Surviving Mars

    Single-player alternative to Dr. Planet — playable solo, no multiplayer required. Shares Simulation with Dr. Planet.

    There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.

    2018StrategySimulationSingle-playerSimilar games →
  7. 7
    Reshaping Mars — Steam game cover

    Reshaping Mars

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

    「Reshaping Mars」is a colony simulation game on Mars, you will start by gathering resources, storing food, accepting immigrants, and building a better colony together. Develop powerful technologies for Mars Reshaping, make Mars great agai..sorry, just great. Don't forget to make the residents happy.

    2023StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Love Tavern — Steam game cover

    Love Tavern

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

    After your death due to a car accident, you have been summoned by the goddess to take care of a tavern in an Isekai world. Your job is to hire different girls from various tribes and races to help out the business there, as well as build up room by room of the tavern to expand the business.

    2023ActionStrategyIndie11.99 USDDeck PlayableSingle-playerSimilar games →