Games like Glacial
Games like Glacial include The Forest, The Beast Inside, Outlast, Escape the Backrooms, and Lethal Company. We matched them by the tags players give Glacial on Steam (Action, Adventure, Indie, Horror, and Shooter): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · Adventure · Action

The Beast Inside
Shared: Adventure · Horror · Action

Outlast
Shared: Horror · First-Person · Survival Horror

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

Lethal Company
Shared: Horror · First-Person · Exploration

Darkwood
Shared: Adventure · Horror · Action

Poppy Playtime
Shared: Horror · First-Person · Indie

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

Bendy and the Dark Revival
Shared: Action · Horror · Adventure

Slender: The Arrival
Shared: Horror · Indie · First-Person

We Happy Few
Shared: Adventure · Action · Indie

Ready or Not
Shared: Shooter · Horror · Action

Fallout 4
Shared: Adventure · Exploration · Shooter

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · Horror · Action

Spooky's Jump Scare Mansion: HD Renovation
Shared: Adventure · Indie · Horror

Firewatch
Shared: Adventure · Walking Simulator · Indie

The Hat Man: Shadow Ward
Shared: Indie · Horror · Adventure

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

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

Dark Deception
Shared: Horror · Action · Indie

SILENT HILL: Townfall
Shared: Adventure · Action · Horror

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Action

BioShock Infinite
Shared: Action · Shooter · Adventure

Sons Of The Forest
Shared: Horror · Survival Horror · Adventure