IMHO.

Single-player games like Open Waters

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

Ranked picks

  1. 1
    Maja Island — Steam game cover

    Maja Island

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    Sail through a mysterious open world island in your trusty boat, scavenge for resources to upgrade it, and face off against Maja.

    2026ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    DIVE or DIE - Children of Rain — Steam game cover

    DIVE or DIE - Children of Rain

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    Every descent is a deadly gamble. DIVE or DIE in the cursed abyss, face Eldritch horrors to uncover the mystery of the black rain. Scavenge and upgrade, recruit and sacrifice. Save your camp... The Flood is coming.

    2026ActionIndieAdventure14.39 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    Madness Afloat — Steam game cover

    Madness Afloat

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    Pilot customizable steamships through a Lovecraftian Polynesian archipelago. Explore and survive handcrafted missions, manage cursed cargo, and balance sanity against power. Face the deep alone or in optional co-op expeditions.

    2027ActionAdventureRPGSingle-playerSimilar games →
  4. 4
    Narcosis — Steam game cover

    Narcosis

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

    Survival, horror at the sunless depths of the Pacific Ocean: Stranded on the seafloor with low light and few tools, an industrial diver takes desperate steps to surface before his oxygen — and sanity — give out.

    2017IndieAdventure14.99 USDSingle-playerSimilar games →
  5. 5
    Subnautica 2 — Steam game cover

    Subnautica 2

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths.

    2026ActionAdventureEarly Access29.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Darkwood — Steam game cover

    Darkwood

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    Darkwood - a new perspective on survival horror. Scavenge and explore a rich, ever-changing free-roam world by day, then hunker down in your hideout and pray for the morning light.

    2017ActionStrategyAdventure14.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Lamentum — Steam game cover

    Lamentum

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    Lamentum is a pixel art survival horror game, set in New England in the mid-nineteenth century.

    2021ActionIndieAdventure15.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    The Shore — Steam game cover

    The Shore

    Single-player alternative to Open Waters — playable solo, no multiplayer required. Shares Action and Adventure with Open Waters.

    THE SHORE is a first person story driven game with an atmospheric environment and narrations, You will encounter mysterious creatures and unravel the secrets behind them. Strong elements of horror, struggle to survive an unknown world that will make you question your own sanity.

    2021ActionIndieAdventure11.99 USDDeck VerifiedSingle-playerSimilar games →