Games like GHOUL
Games like GHOUL include MiSide, Scorn, Outlast, Outlast 2, and Fran Bow. We matched them by the tags players give GHOUL on Steam (Adventure, Indie, Sexual Content, Gore, and Horror): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Sexual Content · Psychological Horror · Horror

Scorn
Shared: Gore · Sexual Content · Horror

Outlast
Shared: Horror · Gore · Psychological Horror

Outlast 2
Shared: Horror · Psychological Horror · Gore

Fran Bow
Shared: Adventure · Psychological Horror · Indie

Amnesia: The Dark Descent
Shared: Gore · Horror · Psychological Horror

ParanormalHK
Shared: Sexual Content · Horror · Adventure

Detention
Shared: Indie · Horror · Adventure

Lucius
Shared: Adventure · Horror · Gore

Home Sweet Home
Shared: Adventure · Horror · Gore

Raging Loop
Shared: Adventure · Indie · Psychological Horror

DEVOUR
Shared: Horror · Sexual Content · Psychological Horror

Sally Face - Episode One
Shared: Indie · Psychological Horror · Adventure

Mouthwashing
Shared: Horror · Psychological Horror · Indie

Still Wakes the Deep
Shared: Horror · Gore · Psychological Horror

FAITH: The Unholy Trinity
Shared: Indie · Horror · Psychological Horror

Welcome to the Game
Shared: Horror · Indie · Psychological Horror

The Beast Inside
Shared: Adventure · Horror · Indie

White Day: A Labyrinth Named School
Shared: Adventure · Sexual Content · Horror

Notes of Soul
Shared: Sexual Content · Adventure · Horror

The Medium
Shared: Adventure · Horror · Psychological Horror

Changed
Shared: Sexual Content · Adventure · Psychological Horror

Clive Barker's Hellraiser: Revival
Shared: Sexual Content · Gore · Horror

Little Nightmares
Shared: Adventure · Horror · Indie