IMHO.

Single-player games like Ocean Keeper: Dome Survival

Below are 12 single-player Steam games similar to Ocean Keeper: Dome Survival, 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 Ocean Keeper: Dome Survival page.

Ranked picks

  1. 1
    Sunken Veins — Steam game cover

    Sunken Veins

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Sunken Veins is a resource management horror game set in a deep sea mining facility. You collect resources deposited by an underwater drill, avoid adaptive monsters and drain away overwhelming floods of water caused from mining operations.

    2025ActionStrategyIndie8.99 USDSingle-playerSimilar games →
  2. 2
    Submeris — Steam game cover

    Submeris

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Submeris is an underwater mining adventure set beneath a mysterious island. Dig, upgrade your gear, survive dangerous depths, and uncover the legendary treasure hidden far below the ocean floor!

    2025ActionStrategyIndie4.99 USDSingle-playerSimilar games →
  3. 3
    Insiders — Steam game cover

    Insiders

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Welcome to the dangerous micro world hidden inside the human body. Pilot an advanced microship through the bloodstream, brain and kidneys. Mine resources, fight microbes, craft ship modules and weapons, build bases, discover new microorganisms and find a cure for cancer. Don’t get eaten!

    2021ActionIndieAdventure13.99 USDSingle-playerSimilar games →
  4. 4
    Metal Bringer — Steam game cover

    Metal Bringer

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    In this roguelike action-adventure, control humanoid "Labor" and giant "Arms" to uncover the mysteries of the world. Create fully-customizable robots, strengthen them, and take down hordes of enemies!

    2025ActionIndie19.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    CryoFall — Steam game cover

    CryoFall

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    CryoFall is a sci-fi colony simulation survival game set on a forgotten planet in a distant future. Master technology, agriculture, trading, industry, cybernetics, exploration, and more!

    2021ActionStrategyIndie19.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Wall World — Steam game cover

    Wall World

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Explore the mysterious Wall World on your giant robospider: mine for valuable resources, upgrade your equipment to fight off hordes of monsters, and discover exotic biomes in-between attacks. Will you be able to survive and learn the secrets of the Wall World?

    2023ActionStrategyIndie6.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Museum No.9 — Steam game cover

    Museum No.9

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Indie and Adventure with Ocean Keeper: Dome Survival.

    Massive artifact collection! Build your museum with extreme freedom! Visitor revenue depends on your route design, and whether you can achieve perfect profits is entirely up to you! Enjoy light rogue-style adventure exploration, and use different skill combinations to battle monsters every time!

    2025StrategyIndieAdventure4.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Galactic Mining Corp — Steam game cover

    Galactic Mining Corp

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Galactic Mining Corp is a unique rogue-lite, action game with crafting and base building mechanics. Head into uncharted space and discover a universe of locations to exploit for riches! Use your profits to expand your HQ, hire a crazy work force, obtain new drill components and upgrade everything.

    2021ActionIndieAdventure12.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Vampire Survivors — Steam game cover

    Vampire Survivors

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!

    2022ActionIndieRPG4.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Dome Keeper — Steam game cover

    Dome Keeper

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!

    2022ActionIndieAdventure17.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Wall World 2 — Steam game cover

    Wall World 2

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action and Indie with Ocean Keeper: Dome Survival.

    The adventure in the mysterious world of the Wall continues! Pilot your robospider into its depths, uncover lost artifacts and technologies, upgrade your exosuit and spider, and battle the horrors lurking in the dark. Unravel the mysteries buried in the depths of the Wall!

    2025ActionStrategyIndie11.99 USDDeck VerifiedSingle-playerSimilar games →
  12. 12
    Last Pirates: Die Together — Steam game cover

    Last Pirates: Die Together

    Single-player alternative to Ocean Keeper: Dome Survival — playable solo, no multiplayer required. Shares Action with Ocean Keeper: Dome Survival.

    An online co-op horror experience for up to 4 players. Use your elastic arms to grab valuable loot for your captain. But be careful, danger lurks around every corner trying to take your booty!

    2026ActionSingle-playerSimilar games →