Games like Skinwalkers Valley
Games like Skinwalkers Valley include Darkwood, Layers of Fear (2016), SOMA, Little Nightmares, and Bad Parenting 1: Mr. Red Face. We matched them by the tags players give Skinwalkers Valley on Steam (Linear, Adventure, RPG, Horror, and Walking Simulator): closest matches first, and among equally close ones the better-known games.

Darkwood
Shared: Adventure · Horror · RPG

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

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Little Nightmares
Shared: Adventure · Horror · Atmospheric

Bad Parenting 1: Mr. Red Face
Shared: Adventure · Horror · Walking Simulator

Scanner Sombre
Shared: Horror · Adventure · Walking Simulator

Little Nightmares II
Shared: Adventure · Horror · Dark

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

From The Darkness
Shared: Horror · Dark · Psychological Horror

Visage
Shared: Horror · Dark · Psychological Horror

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

Amenti
Shared: Adventure · Horror · Dark

Outlast
Shared: Horror · Atmospheric · Psychological Horror

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

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

Welcome to Kowloon
Shared: Horror · Adventure · Atmospheric

Psalm 5:9-13
Shared: Horror · Psychological Horror · Walking Simulator

ROUTINE
Shared: Adventure · Atmospheric · Psychological Horror

Blair Witch
Shared: Adventure · Horror · Psychological Horror

The Exit 8
Shared: Horror · Walking Simulator · Exploration

The Lightkeeper
Shared: Adventure · Horror · Atmospheric

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

Fears to Fathom - Norwood Hitchhike
Shared: Horror · Psychological Horror · Atmospheric