Games like Escape Game: Galleria
Games like Escape Game: Galleria include Firewatch, Platform 8, What Remains of Edith Finch, I'm counting to 6..., and Beside Myself. We matched them by the tags players give Escape Game: Galleria on Steam (Adventure, Simulation, Action-Adventure, Walking Simulator, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · First-Person

Platform 8
Shared: Adventure · Simulation · Walking Simulator

What Remains of Edith Finch
Shared: Walking Simulator · Adventure · First-Person

I'm counting to 6...
Shared: Adventure · Simulation · Walking Simulator

Beside Myself
Shared: Adventure · Simulation · Walking Simulator

The Exit 8
Shared: Walking Simulator · First-Person · 3D

September 7th
Shared: Walking Simulator · Simulation · 3D Platformer

The Stanley Parable
Shared: Walking Simulator · Adventure · First-Person

Who's at the door?
Shared: Adventure · Simulation · Walking Simulator

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

SnowRunner
Shared: Simulation · Adventure · Realistic

The Long Dark
Shared: Adventure · Simulation · First-Person

Sonic Frontiers
Shared: Adventure · 3D Platformer · Action-Adventure

Chained Together
Shared: Adventure · Simulation · 3D Platformer

PC Building Simulator
Shared: Simulation · 3D · First-Person

Crime Scene Cleaner
Shared: Simulation · First-Person · Adventure

Kena: Bridge of Spirits
Shared: Adventure · Action-Adventure · 3D Platformer

Father's Day
Shared: Simulation · Walking Simulator · 3D Platformer

[Chillas Art] The Convenience Store
Shared: Adventure · Simulation · Walking Simulator

A Plague Tale: Requiem
Shared: Adventure · Action-Adventure · 3D

Quern - Undying Thoughts
Shared: Adventure · Walking Simulator · Mystery

Riven
Shared: Adventure · First-Person · Walking Simulator

Internet Cafe Simulator 2
Shared: Simulation · 3D · First-Person

POOLS
Shared: Walking Simulator · Realistic · Adventure