Games like CRUSH DEPTH
Games like CRUSH DEPTH include Subnautica, Subnautica 2, Iron Lung, SOMA, and Outer Wilds. We matched them by the tags players give CRUSH DEPTH on Steam (Underwater, Sci-fi, Horror, Exploration, and Puzzle): closest matches first, and among equally close ones the better-known games.

Subnautica
Shared: Underwater · Horror · Exploration

Subnautica 2
Shared: Underwater · Horror · Exploration

Iron Lung
Shared: Horror · Underwater · Submarine

SOMA
Shared: Horror · Sci-fi · Exploration

Outer Wilds
Shared: Exploration · Puzzle · Sci-fi

Lethal Company
Shared: Horror · Exploration · Sci-fi

Amnesia: Rebirth
Shared: Puzzle · Action-Adventure · Horror

Subnautica: Below Zero
Shared: Underwater · Horror · Exploration

The Talos Principle 2
Shared: Puzzle · Sci-fi · Exploration

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · Exploration · First-Person

Rise of the Tomb Raider™
Shared: Exploration · Female Protagonist · Action-Adventure

The Talos Principle
Shared: Sci-fi · Puzzle · First-Person

Portal 2
Shared: Puzzle · First-Person · Female Protagonist

Tomb Raider Game of the Year
Shared: Female Protagonist · Exploration · Adventure

Five Nights at Freddy's: Security Breach
Shared: Horror · Exploration · First-Person

The Exit 8
Shared: Exploration · Horror · Puzzle

Lorelei and the Laser Eyes
Shared: Puzzle · Horror · Exploration

Inside the Backrooms
Shared: Horror · Puzzle · Exploration

STAR WARS Jedi: Fallen Order™
Shared: Action-Adventure · Sci-fi · Exploration

Portal
Shared: Puzzle · Sci-fi · First-Person

Half-Life: Alyx
Shared: Horror · Sci-fi · Female Protagonist

Atomic Heart
Shared: Horror · Sci-fi · Action-Adventure

Tomb Raider I-III Remastered Starring Lara Croft
Shared: Action-Adventure · Exploration · Female Protagonist

Indiana Jones and the Great Circle
Shared: Action-Adventure · Puzzle · Exploration