Single-player games like The Trench
Below are 8 single-player Steam games similar to The Trench, 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 The Trench page.
Ranked picks
- 1

Narcosis
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Indie and Adventure with The Trench.
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.
- 2

Barotrauma
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Action and Indie with The Trench.
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
- 3

Sonar Shock
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Action and Adventure with The Trench.
Submarine’s haunted! Hunt and be hunted in this horror dungeon crawler inspired by the decay of the Soviet Union (and immersive RPGs from the 90s).
- 4

Subterror
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Action and Indie with The Trench.
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
- 5

Amnesia: A Machine for Pigs
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Action and Indie with The Trench.
From the creators of Amnesia: The Dark Descent and Dear Esther comes a new first-person horrorgame that will drag you to the depths of greed, power and madness. It will bury its snout into your ribs and it will eat your heart.
- 6

SOMA
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Action and Indie with The Trench.
From the creators of Amnesia: The Dark Descent comes SOMA, a sci-fi horror game set below the waves of the Atlantic ocean. Struggle to survive a hostile world that will make you question your very existence.
- 7

Darkwater
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Action and Indie with The Trench.
Darkwater is a cooperative extraction horror game for 1-4 players. Command a submarine trapped under the ice of an alien planet. Battle enemy vessels and deep sea abominations as you hunt for resources. Do what it takes to survive.
- 8

The Sirena Expedition
Single-player alternative to The Trench — playable solo, no multiplayer required. Shares Indie and Adventure with The Trench.
The Sirena Expedition is a short PSX-style horror-platformer in which you explore a mysterious underwater facility.