Games like Spooky Shelter
Games like Spooky Shelter include Firewatch, Platform 8, What Remains of Edith Finch, Scanner Sombre, and Layers of Fear (2016). We matched them by the tags players give Spooky Shelter on Steam (Exploration, Simulation, Hidden Object, Walking Simulator, and Adventure): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Exploration

Platform 8
Shared: Simulation · Walking Simulator · Adventure

What Remains of Edith Finch
Shared: Walking Simulator · Exploration · Adventure

Scanner Sombre
Shared: Exploration · Walking Simulator · Adventure

Layers of Fear (2016)
Shared: Walking Simulator · Horror · Psychological Horror

SOMA
Shared: Exploration · Horror · Psychological Horror

The Exit 8
Shared: Exploration · Walking Simulator · Horror

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

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Exploration · Horror

MiSide
Shared: Psychological Horror · First-Person · Horror

Escape the Backrooms
Shared: Horror · Exploration · Psychological Horror

Visage
Shared: Horror · Psychological Horror · First-Person

Still Wakes the Deep
Shared: Horror · Walking Simulator · Psychological Horror

Outlast
Shared: First-Person · Horror · Psychological Horror

September 7th
Shared: Exploration · Walking Simulator · Horror

Lethal Company
Shared: Exploration · First-Person · Horror

POOLS
Shared: Walking Simulator · Exploration · Psychological Horror

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

The Cabin Factory
Shared: Walking Simulator · Horror · Psychological Horror

Outer Wilds
Shared: Exploration · Adventure · Atmospheric

Slime Rancher
Shared: Exploration · Adventure · First-Person

Among the Sleep - Enhanced Edition
Shared: Adventure · Horror · Walking Simulator

Dollmare
Shared: Simulation · 3D · Horror

ROUTINE
Shared: Adventure · Psychological Horror · Exploration