Games like Unsought
Games like Unsought include MiSide, Outlast, Road 96, Amanda the Adventurer, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Unsought on Steam (Horror, Adventure, Atmospheric, 1990's, and Multiple Endings): closest matches first, and among equally close ones the better-known games.

MiSide
Shared: Horror · Psychological Horror · Atmospheric

Outlast
Shared: Horror · Atmospheric · First-Person

Road 96
Shared: 1990's · Adventure · First-Person

Amanda the Adventurer
Shared: Horror · 1990's · First-Person

Five Nights at Freddy's: Security Breach
Shared: Horror · Multiple Endings · Adventure

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Firewatch
Shared: Adventure · Atmospheric · First-Person

The Room Two
Shared: Atmospheric · Horror · Adventure

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

Backrooms: Escape Together
Shared: Horror · Psychological Horror · Atmospheric

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

SILENT HILL 2
Shared: Horror · Psychological Horror · Atmospheric

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

Fran Bow
Shared: Horror · Psychological Horror · Adventure

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

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Subliminal
Shared: Atmospheric · Psychological Horror · Horror

The Room Three
Shared: Adventure · Atmospheric · Point & Click

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

Little Nightmares II
Shared: Horror · Adventure · Atmospheric

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

Endacopia
Shared: Adventure · Horror · Point & Click

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

The Room
Shared: Atmospheric · Adventure · Point & Click