Games like Snowsquall Grip
Games like Snowsquall Grip include Mouthwashing, Firewatch, Firework, What Remains of Edith Finch, and Layers of Fear (2016). We matched them by the tags players give Snowsquall Grip on Steam (Horror, Walking Simulator, Retro, Thriller, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Psychological Horror · Retro

Firewatch
Shared: Walking Simulator · Adventure · Atmospheric

Firework
Shared: Horror · Psychological Horror · Mystery

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

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

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

No one lives under the lighthouse Director's cut
Shared: Horror · Adventure · Retro

Phasmophobia
Shared: Horror · Psychological Horror · Supernatural

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

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

The Park®
Shared: Horror · Walking Simulator · Psychological Horror

Poppy Playtime
Shared: Horror · Psychological Horror · Mystery

Summer of '58
Shared: Horror · Thriller · Walking Simulator

MiSide
Shared: Horror · Psychological Horror · Atmospheric

Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · Thriller

Fears to Fathom - Woodbury Getaway
Shared: Horror · Psychological Horror · Adventure

Outlast
Shared: Horror · Psychological Horror · Atmospheric

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

No, I'm not a Human
Shared: Horror · Psychological Horror · Atmospheric

Garten of Banban
Shared: Horror · Psychological Horror · Walking Simulator

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

Welcome to Kowloon
Shared: Horror · Walking Simulator · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Atmospheric

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