Games like FORMIDO
Games like FORMIDO include What Remains of Edith Finch, SOMA, Mouthwashing, Layers of Fear (2016), and No, I'm not a Human. We matched them by the tags players give FORMIDO on Steam (Atmospheric, Psychological Horror, Walking Simulator, Dark, and Time Travel): closest matches first, and among equally close ones the better-known games.

What Remains of Edith Finch
Shared: Atmospheric · Walking Simulator · Story Rich

SOMA
Shared: Psychological Horror · Atmospheric · Dark

Mouthwashing
Shared: Psychological Horror · Atmospheric · Story Rich

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

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

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

Firewatch
Shared: Atmospheric · Walking Simulator · Story Rich

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

Sally Face - Episode One
Shared: Psychological Horror · Dark · Story Rich

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

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

MiSide
Shared: Psychological Horror · Atmospheric · Story Rich

Visage
Shared: Psychological Horror · Dark · Atmospheric

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

From The Darkness
Shared: Psychological Horror · Dark · Atmospheric

THRESHOLD
Shared: Psychological Horror · Atmospheric · Dark

Outlast
Shared: Atmospheric · Psychological Horror · Horror

Dagon: by H. P. Lovecraft
Shared: Atmospheric · Psychological Horror · Dark

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

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

SILENT HILL 2
Shared: Psychological Horror · Atmospheric · Story Rich

Scanner Sombre
Shared: Walking Simulator · Atmospheric · Psychological Horror

OMORI
Shared: Psychological Horror · Story Rich · Multiple Endings

Garten of Banban
Shared: Psychological Horror · Horror · Atmospheric