Games like Excrucia
Games like Excrucia include Mouthwashing, No, I'm not a Human, Sally Face - Episode One, Little Nightmares II, and Little Nightmares. We matched them by the tags players give Excrucia on Steam (Adventure, Horror, Psychological Horror, Atmospheric, and Thriller): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

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

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

Little Nightmares II
Shared: Adventure · Horror · Atmospheric

Little Nightmares
Shared: Horror · Adventure · Atmospheric

SOMA
Shared: Horror · Psychological Horror · Atmospheric

SILENT HILL 2
Shared: Horror · Psychological Horror · Atmospheric

Detention
Shared: Horror · Psychological Horror · Atmospheric

Fran Bow
Shared: Psychological Horror · Horror · Adventure

Alan Wake
Shared: Horror · Adventure · Thriller

Firewatch
Shared: Adventure · Atmospheric · Mystery

Poppy Playtime
Shared: Horror · Psychological Horror · Dark

Raging Loop
Shared: Adventure · Psychological Horror · Mystery

Hellblade: Senua's Sacrifice
Shared: Atmospheric · Adventure · Horror

The Medium
Shared: Adventure · Horror · Psychological Horror

Notch - The Innocent LunA: Eclipsed SinnerS
Shared: Horror · Adventure · Psychological Horror

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

MiSide
Shared: Psychological Horror · Horror · Atmospheric

Tiny Bunny
Shared: Horror · Atmospheric · Psychological Horror

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Mystery

Outlast
Shared: Horror · Atmospheric · Psychological Horror

Darkwood
Shared: Horror · Adventure · Psychological Horror

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

Martha Is Dead
Shared: Psychological Horror · Horror · Adventure