Games like Abyssal Trench
Games like Abyssal Trench include The Forest, Darkwood, Escape the Backrooms, Outlast, and The Beast Inside. We matched them by the tags players give Abyssal Trench on Steam (Action, Adventure, Horror, Simulation, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · Adventure · Action

Darkwood
Shared: Horror · Adventure · Action

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Outlast
Shared: Horror · Survival Horror · Psychological Horror

The Beast Inside
Shared: Adventure · Horror · Action

Resident Evil 4
Shared: Action · Horror · Survival Horror

Visage
Shared: Horror · Psychological Horror · Survival Horror

SOMA
Shared: Horror · Psychological Horror · Survival Horror

SILENT HILL: Townfall
Shared: Adventure · Action · Horror

The Exit 8
Shared: Horror · Exploration · Walking Simulator

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

SILENT HILL f
Shared: Horror · Psychological Horror · Action

Five Nights at Freddy's: Security Breach
Shared: Horror · Survival Horror · Adventure

Slender: The Arrival
Shared: Horror · Survival Horror · Psychological Horror

The Evil Within 2
Shared: Horror · Action · Psychological Horror

Platform 8
Shared: Adventure · Psychological Horror · Simulation

Resident Evil Requiem
Shared: Horror · Action · Survival Horror

[Chillas Art] The Convenience Store
Shared: Horror · Adventure · Psychological Horror

Subnautica 2
Shared: Horror · Adventure · Exploration

The Cabin Factory
Shared: Horror · Psychological Horror · Walking Simulator

We Happy Few
Shared: Adventure · Action · Psychological Horror

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror

Inside the Backrooms
Shared: Horror · Survival Horror · Psychological Horror

The Complex: Expedition
Shared: Horror · Action · Psychological Horror