Games like FAITH: The Unholy Trinity
Games like FAITH: The Unholy Trinity include Mouthwashing, SOMA, OMORI, Detention, and Little Nightmares. We matched them by the tags players give FAITH: The Unholy Trinity on Steam (Horror, Pixel Graphics, Psychological Horror, Indie, and Retro): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Psychological Horror · Story Rich

SOMA
Shared: Horror · Psychological Horror · Story Rich

OMORI
Shared: Psychological Horror · Pixel Graphics · Indie

Detention
Shared: Horror · Psychological Horror · Indie

Little Nightmares
Shared: Horror · Atmospheric · Indie

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

Outlast 2
Shared: Horror · Psychological Horror · Dark

DISTRAINT: Deluxe Edition
Shared: Horror · Psychological Horror · Indie

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

Fran Bow
Shared: Psychological Horror · Horror · Story Rich

Little Nightmares II
Shared: Horror · Psychological Horror · Dark

Outlast
Shared: Horror · Psychological Horror · Atmospheric

No, I'm not a Human
Shared: Horror · Psychological Horror · Indie

Tiny Bunny
Shared: Horror · Psychological Horror · Story Rich

Mad Father
Shared: Horror · Psychological Horror · Pixel Graphics

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

IMSCARED
Shared: Horror · Psychological Horror · Pixel Graphics

OneShot
Shared: Pixel Graphics · Indie · Story Rich

SILENT HILL 2
Shared: Horror · Psychological Horror · Story Rich

Blair Witch
Shared: Horror · Psychological Horror · Indie

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

Tales of the Black Forest
Shared: Pixel Graphics · Horror · Indie

The Evil Within 2
Shared: Horror · Psychological Horror · Story Rich

Pony Island
Shared: Psychological Horror · Pixel Graphics · Indie