Games like Crimson Theory
Games like Crimson Theory include Resident Evil Requiem, The Forest, Escape the Backrooms, Metro Exodus, and Ready or Not. We matched them by the tags players give Crimson Theory on Steam (Action, Adventure, Exploration, FPS, and 3D): closest matches first, and among equally close ones the better-known games.

Resident Evil Requiem
Shared: Action · FPS · Horror

The Forest
Shared: Adventure · Action · Horror

Escape the Backrooms
Shared: Horror · Exploration · First-Person

Metro Exodus
Shared: FPS · Action · First-Person

Ready or Not
Shared: FPS · Realistic · Action

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

Resident Evil Village
Shared: Action · First-Person · Horror

Dying Light
Shared: Horror · First-Person · Action

Fallout 4
Shared: Exploration · Adventure · Action

Far Cry® 5
Shared: FPS · Exploration · Action

SILENT HILL: Townfall
Shared: Adventure · Action · Exploration

Half-Life 2
Shared: Action · FPS · Adventure

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

The Beast Inside
Shared: Adventure · Action · First-Person

Fallout: New Vegas
Shared: Exploration · Action · Adventure

Far Cry 3
Shared: Action · Adventure · FPS

Atomic Heart
Shared: Adventure · Action · FPS

Resident Evil 7 Biohazard
Shared: First-Person · Horror · Action

Far Cry® 2
Shared: Action · FPS · Adventure

Far Cry® 4
Shared: Action · FPS · Adventure

Inside the Backrooms
Shared: Adventure · Horror · Exploration

METRO 2033 Redux
Shared: FPS · Action · First-Person

Lethal Company
Shared: First-Person · Exploration · Horror

Far Cry® 6
Shared: FPS · Action · Adventure