Games like The Demon's Exorcism
Games like The Demon's Exorcism include SOMA, Poppy Playtime, Darkwood, Outlast, and Little Nightmares II. We matched them by the tags players give The Demon's Exorcism on Steam (Horror, Strategy, Psychological Horror, Dark, and Action): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Psychological Horror · Dark

Poppy Playtime
Shared: Horror · Dark · Psychological Horror

Darkwood
Shared: Horror · Psychological Horror · Action

Outlast
Shared: Horror · Psychological Horror · First-Person

Little Nightmares II
Shared: Horror · Dark · Adventure

Bendy and the Ink Machine
Shared: Horror · First-Person · Dark

Buckshot Roulette
Shared: Horror · Dark · Strategy

Little Nightmares
Shared: Horror · Dark · Adventure

Outlast 2
Shared: Horror · Psychological Horror · Dark

Sally Face - Episode One
Shared: Psychological Horror · Horror · Dark

Bendy and the Dark Revival
Shared: Horror · Action · First-Person

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

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

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

Ultimate Custom Night
Shared: Horror · Strategy · Singleplayer

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

Fran Bow
Shared: Psychological Horror · Horror · Story Rich

MiSide
Shared: Psychological Horror · Horror · Story Rich

Five Nights at Freddy's 4
Shared: Horror · Dark · Psychological Horror

Pacify
Shared: Horror · Psychological Horror · Dark

Visage
Shared: Horror · Psychological Horror · Dark

Five Nights at Freddy's: Sister Location
Shared: Horror · Dark · Strategy

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

Five Nights at Freddy's 2
Shared: Horror · Psychological Horror · Singleplayer