IMHO.

Single-player games like TARTARUS

Below are 12 single-player Steam games similar to TARTARUS, 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 TARTARUS page.

Ranked picks

  1. 1
    STAR TALE: Odyssey One — Steam game cover

    STAR TALE: Odyssey One

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

    This is not a rescue mission. No one is coming. This is survival. You awaken alone aboard an infested colony ship carrying the last survivors of humanity. Restore critical systems, manage oxygen, and confront hostile organisms while the AI guiding you seems to be hiding something.

    2026ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    Undulations — Steam game cover

    Undulations

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

    This is a survival escape action game from a huge wave where you can experience fear and despair within the first minute. The goal is to run around freely in 3D space from a first-person perspective and avoid large waves. The joy of conquering a huge wave is immeasurable.

    2024ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  3. 3
    Finish Report — Steam game cover

    Finish Report

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

    Finish Report is a short science fiction horror game. All communications have been lost to a space station far in deep space. You as a one-man investigation unit has been sent to find out why did the station go silent.

    2023IndieAdventure2.99 USDSingle-playerSimilar games →
  4. 4
    DooM in the Dark — Steam game cover

    DooM in the Dark

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

    The space station has undergone an unknown contamination from space, the previously unknown X virus mutates, almost the entire station crew is infected, you need to stop the army of mutants before they break through to Earth and doomsday began!

    2019ActionIndie0.99 USDSingle-playerSimilar games →
  5. 5
    Gods Will Be Watching — Steam game cover

    Gods Will Be Watching

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

    Gods Will Be Watching is a minimalistic “point and click thriller” centered on despair, commitment, and sacrifice as players face intriguing puzzles and tough decisions that will affect their entire crew’s wellbeing.

    2014IndieAdventure9.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    PANIC STATION — Steam game cover

    PANIC STATION

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

    After exploring the new planet, the space crew became infected with an unknown virus. After a long epidemic, the space station plunged into chaos. Various mutations took place with the crew of the ship, which clouded their minds. Make your way to the rescue shuttle through the mysterious danger.

    2020ActionIndieAdventure1.99 USDSingle-playerSimilar games →
  7. 7
    Duskers — Steam game cover

    Duskers

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

    Pilot drones into derelict spaceships to find the means to survive and piece together how the universe became a giant graveyard.

    2016StrategyIndieSimulation7.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Disc Room — Steam game cover

    Disc Room

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

    Are you ready to get sliced in half? The year is 2089 and a giant disc has appeared in orbit of Jupiter. Step into the oversized space suit of a brave scientist and explore this sprawling intergalactic slaughterhouse.

    2020ActionIndieAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Alien: Isolation — Steam game cover

    Alien: Isolation

    Single-player alternative to TARTARUS — playable solo, no multiplayer required. Shares Action with TARTARUS.

    Discover the true meaning of fear in Alien: Isolation, a survival horror set in an atmosphere of constant dread and mortal danger.

    2014Action39.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    INFRA — Steam game cover

    INFRA

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

    INFRA puts you into the boots of a structural analyst on a routine mission. Quickly though, your task turns into a fight for survival, all caused by deep-rooted schemes of the past. Your tools are simple: your camera and the wits to navigate a labyrinth of debris.

    2016IndieAdventure6.89 USDSingle-playerSimilar games →
  11. 11
    Zork Nemesis: The Forbidden Lands — Steam game cover

    Zork Nemesis: The Forbidden Lands

    Single-player alternative to TARTARUS — playable solo, no multiplayer required. Shares Adventure with TARTARUS.

    Travel through five mind-bending worlds to discover the ancient secret of Alchemy that will free the trapped souls from evil’s grip…Do you dare enter the Forbidden Lands?

    2017AdventureNudityViolent5.99 USDSingle-playerSimilar games →
  12. 12
    Myst — Steam game cover

    Myst

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

    Welcome to Myst: a starkly beautiful island, eerily tinged with mystery and shrouded in intrigue. Built from the ground up to play in 2D & VR, explore Myst in a whole new dimension! Journey to the Ages, unravel puzzles, and be a part of the surrealistic adventure that will become your own.

    2021IndieAdventureCasual34.99 USDDeck VerifiedSingle-playerSimilar games →