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

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.
- 2

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.
- 3

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.
- 4

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.
- 5

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.
- 6

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.
- 7

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.
- 8

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.