Games like The Last Ski Trip
Games like The Last Ski Trip include Firewatch, Layers of Fear (2016), Darkwood, SOMA, and Visage. We matched them by the tags players give The Last Ski Trip on Steam (Adventure, Horror, RPG, Dark, and Linear): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

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

Darkwood
Shared: Horror · Adventure · Dark

SOMA
Shared: Horror · Dark · Atmospheric

Visage
Shared: Horror · Dark · Adventure

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

Little Nightmares
Shared: Horror · Adventure · Dark

Outlast
Shared: Horror · Atmospheric · Adventure

From The Darkness
Shared: Horror · Dark · Adventure

Scanner Sombre
Shared: Horror · Adventure · Walking Simulator

Amenti
Shared: Adventure · Horror · Dark

Little Nightmares II
Shared: Adventure · Horror · Dark

Blair Witch
Shared: Adventure · Horror · Dark

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

Welcome to Kowloon
Shared: Horror · Adventure · Atmospheric

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

Mouthwashing
Shared: Horror · Atmospheric · Dark

Poppy Playtime
Shared: Horror · Dark · Adventure

Among the Sleep - Enhanced Edition
Shared: Horror · Adventure · Atmospheric

Hellblade: Senua's Sacrifice
Shared: Adventure · Atmospheric · Dark

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

Slender: The Arrival
Shared: Horror · Dark · Adventure

Obey the Voice™
Shared: Adventure · Horror · Dark

ROUTINE
Shared: Adventure · Dark · Horror