Games like Deep Sheol
Games like Deep Sheol include Gloomwood, Resident Evil Requiem, DUSK, Amnesia: The Bunker, and Resident Evil Village. We matched them by the tags players give Deep Sheol on Steam (Old School, Lovecraftian, Resource Management, Survival Horror, and First-Person): closest matches first, and among equally close ones the better-known games.

Gloomwood
Shared: Survival Horror · Immersive Sim · First-Person

Resident Evil Requiem
Shared: Survival Horror · First-Person · Zombies

DUSK
Shared: Old School · Retro · First-Person

Amnesia: The Bunker
Shared: Survival Horror · Immersive Sim · First-Person

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

Resident Evil 4 (2005)
Shared: Survival Horror · Inventory Management · Zombies

Left 4 Dead 2
Shared: FPS · Zombies · First-Person

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

System Shock
Shared: Immersive Sim · Cyberpunk · First-Person

Dying Light
Shared: Survival Horror · First-Person · Zombies

Resident Evil 7 Biohazard
Shared: Survival Horror · First-Person · Singleplayer

Ion Fury
Shared: Old School · First-Person · Cyberpunk

DREDGE
Shared: Lovecraftian · Exploration · Inventory Management

CULTIC
Shared: Old School · First-Person · FPS

Cyberpunk 2077
Shared: Cyberpunk · First-Person · FPS

The Forest
Shared: Survival Horror · First-Person · Exploration

Call of Duty®: Black Ops III
Shared: First-Person · FPS · Zombies

My Friendly Neighborhood
Shared: Survival Horror · Resource Management · First-Person

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

Lethal Company
Shared: First-Person · Survival Horror · Exploration

Warhammer 40,000: Boltgun
Shared: Old School · First-Person · Retro

HROT
Shared: First-Person · Old School · Retro

Metro Exodus
Shared: First-Person · FPS · Singleplayer

Nightmare of Decay
Shared: Survival Horror · First-Person · FPS