Games like grave desecrator
Games like grave desecrator include SOMA, Escape the Backrooms, Outlast, Amnesia: A Machine For Pigs, and MiSide. We matched them by the tags players give grave desecrator on Steam (Psychological Horror, Romance, Dark Humor, Casual, and Simulation): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Psychological Horror · Atmospheric · Exploration

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

Outlast
Shared: Psychological Horror · First-Person · Atmospheric

Amnesia: A Machine For Pigs
Shared: Psychological Horror · Exploration · First-Person

MiSide
Shared: Psychological Horror · First-Person · 3D

Poppy Playtime
Shared: Psychological Horror · First-Person · Horror

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

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

Visage
Shared: Psychological Horror · First-Person · Dark

What Remains of Edith Finch
Shared: Exploration · Atmospheric · First-Person

Inside the Backrooms
Shared: Psychological Horror · Exploration · Horror

Hamster Hunter
Shared: Psychological Horror · Exploration · Dark Humor

Backrooms: Escape Together
Shared: Psychological Horror · First-Person · Atmospheric

Scanner Sombre
Shared: Psychological Horror · Exploration · Atmospheric

Layers of Fear (2016)
Shared: Psychological Horror · Atmospheric · First-Person

Fears to Fathom - Woodbury Getaway
Shared: Psychological Horror · Casual · First-Person

Garten of Banban
Shared: Psychological Horror · First-Person · 3D

Firewatch
Shared: Atmospheric · Exploration · First-Person

Slay the Princess — The Pristine Cut
Shared: Psychological Horror · Romance · Interactive Fiction

Five Nights at Freddy's
Shared: Psychological Horror · Horror · First-Person

Outlast 2
Shared: Psychological Horror · First-Person · Horror

Pacify
Shared: Psychological Horror · Exploration · Horror

The Exit 8
Shared: Psychological Horror · Exploration · 3D

Amnesia: The Dark Descent
Shared: Psychological Horror · Atmospheric · First-Person