Games like SOMNIFUGE
Games like SOMNIFUGE include Poppy Playtime, Little Nightmares II, Little Nightmares, Outlast, and Detention. We matched them by the tags players give SOMNIFUGE on Steam (Indie, Adventure, Horror, First-Person, and Puzzle): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · First-Person · Puzzle

Little Nightmares II
Shared: Adventure · Horror · Puzzle

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Outlast
Shared: Horror · First-Person · Atmospheric

Detention
Shared: Indie · Horror · Adventure

Amnesia: The Dark Descent
Shared: Horror · Puzzle · First-Person

Inside the Backrooms
Shared: Horror · Puzzle · Adventure

Hello Neighbor 2
Shared: Adventure · Horror · Puzzle

Amnesia: Rebirth
Shared: First-Person · Puzzle · Horror

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

Mouthwashing
Shared: Horror · Indie · Retro

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

LIMBO
Shared: Indie · Puzzle · Adventure

IMSCARED
Shared: Indie · Horror · Adventure

Fran Bow
Shared: Horror · Adventure · Indie

Garten of Banban
Shared: Horror · First-Person · Puzzle

MOLE
Shared: Adventure · Horror · Puzzle

INSIDE
Shared: Horror · Indie · Atmospheric

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

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

MiSide
Shared: Horror · First-Person · Psychological Horror

Penumbra Overture
Shared: Adventure · Horror · Indie

Endacopia
Shared: Adventure · Horror · Puzzle

Firework
Shared: Indie · Horror · Puzzle