Games like Gallerie
Games like Gallerie include Escape the Backrooms, SILENT HILL: Townfall, Five Nights at Freddy's: Security Breach, Lethal Company, and SOMA. We matched them by the tags players give Gallerie on Steam (Exploration, Action-Adventure, First-Person, 3D, and Horror): closest matches first, and among equally close ones the better-known games.

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

SILENT HILL: Townfall
Shared: Horror · First-Person · Exploration

Five Nights at Freddy's: Security Breach
Shared: Horror · First-Person · Exploration

Lethal Company
Shared: First-Person · Horror · Exploration

SOMA
Shared: Horror · Psychological Horror · Exploration

Amnesia: Rebirth
Shared: Action-Adventure · First-Person · Exploration

Five Nights at Freddy's: Secret of the Mimic
Shared: First-Person · Horror · Exploration

Hamster Hunter
Shared: Exploration · Action-Adventure · 3D

MiSide
Shared: Psychological Horror · First-Person · Horror

Ghostwire: Tokyo
Shared: First-Person · Action-Adventure · Horror

The Exit 8
Shared: Exploration · Horror · First-Person

Incantation
Shared: Exploration · First-Person · Action-Adventure

Far Cry® 5
Shared: Action-Adventure · Exploration · First-Person

SILENT HILL f
Shared: Horror · Psychological Horror · Action-Adventure

Resident Evil Requiem
Shared: Horror · First-Person · Action-Adventure

Still Wakes the Deep
Shared: Horror · First-Person · Psychological Horror

Amnesia: A Machine For Pigs
Shared: Horror · First-Person · Exploration

Firewatch
Shared: First-Person · Exploration · Story Rich

In Sound Mind
Shared: Horror · Psychological Horror · First-Person

Indiana Jones and the Great Circle
Shared: Action-Adventure · First-Person · Exploration

Hello Neighbor
Shared: First-Person · Horror · Action-Adventure

PILGRIM
Shared: Exploration · Horror · Action-Adventure

Outer Wilds
Shared: Exploration · Story Rich · Horror

The Shore
Shared: Exploration · Horror · First-Person