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

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · First-Person

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

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Poppy Playtime
Shared: Horror · Psychological Horror · First-Person

Outlast
Shared: Horror · Psychological Horror · First-Person

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

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

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

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

Visage
Shared: Psychological Horror · Horror · First-Person

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

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

Scanner Sombre
Shared: Horror · Walking Simulator · Psychological Horror

Blair Witch
Shared: Horror · Psychological Horror · Adventure

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

Lethal Company
Shared: Horror · First-Person · Psychological Horror

ROUTINE
Shared: Psychological Horror · Atmospheric · Horror

DON'T SCREAM
Shared: Psychological Horror · Horror · Walking Simulator

Little Nightmares II
Shared: Horror · Adventure · Psychological Horror

MiSide
Shared: Psychological Horror · Horror · First-Person

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

Layers of Fear 2 (2019)
Shared: Psychological Horror · Horror · Walking Simulator