Games like Kawai'ian Isolation
Games like Kawai'ian Isolation include SOMA, Ultimate Custom Night, Five Nights at Freddy's: Security Breach, Resident Evil 7 Biohazard, and Outlast. We matched them by the tags players give Kawai'ian Isolation on Steam (Walking Simulator, Exploration, Survival Horror, Story Rich, and Singleplayer): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Story Rich · Psychological Horror · Survival Horror

Ultimate Custom Night
Shared: Survival Horror · Singleplayer · Horror

Five Nights at Freddy's: Security Breach
Shared: Survival Horror · Singleplayer · Exploration

Resident Evil 7 Biohazard
Shared: Survival Horror · Singleplayer · Horror

Outlast
Shared: Survival Horror · Psychological Horror · Horror

Resident Evil Village
Shared: Survival Horror · Singleplayer · Horror

Resident Evil 4
Shared: Survival Horror · Singleplayer · Horror

The Beast Inside
Shared: Survival Horror · Horror · Singleplayer

Darkwood
Shared: Survival Horror · Psychological Horror · Horror

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Story Rich · Exploration

Escape the Backrooms
Shared: Survival Horror · Psychological Horror · Horror

Outlast 2
Shared: Survival Horror · Psychological Horror · Singleplayer

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

Five Nights at Freddy's 2
Shared: Survival Horror · Singleplayer · Psychological Horror

Poppy Playtime
Shared: Singleplayer · Survival Horror · Horror

Firewatch
Shared: Walking Simulator · Story Rich · Exploration

The Forest
Shared: Survival · Survival Horror · Horror

Five Nights at Freddy's: Sister Location
Shared: Survival Horror · Singleplayer · Horror

Dark Deception
Shared: Singleplayer · Horror · Survival Horror

MiSide
Shared: Story Rich · Psychological Horror · Singleplayer

Five Nights at Freddy's 4
Shared: Survival Horror · Singleplayer · Horror

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

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

Lethal Company
Shared: Survival Horror · Exploration · Horror