Games like The Chills
Games like The Chills include Firewatch, SOMA, Five Nights at Freddy's: Security Breach, What Remains of Edith Finch, and Amnesia: A Machine For Pigs. We matched them by the tags players give The Chills on Steam (Survival Horror, Horror, Walking Simulator, 2D, and Story Rich): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Walking Simulator · Story Rich · Adventure

SOMA
Shared: Horror · Survival Horror · Story Rich

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

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

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

DISTRAINT: Deluxe Edition
Shared: Horror · Indie · 2D

Mad Father
Shared: Horror · Survival Horror · 2D

Bendy and the Dark Revival
Shared: Horror · Survival Horror · Singleplayer

Look Outside
Shared: Survival Horror · Horror · 2D

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

Little Nightmares
Shared: Horror · Adventure · Singleplayer

The Beast Inside
Shared: Horror · Survival Horror · Adventure

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

DISTRAINT 2
Shared: Horror · Story Rich · 2D

Hollow Knight
Shared: 2D · Indie · Singleplayer

Outlast
Shared: Horror · Survival Horror · Singleplayer

Hollow Knight: Silksong
Shared: 2D · Indie · Singleplayer

OneShot
Shared: Story Rich · Indie · Singleplayer

The Coma 2: Vicious Sisters
Shared: Horror · Survival Horror · Indie

Five Nights at Freddy's: Into the Pit
Shared: Horror · 2D · Adventure

Among the Sleep - Enhanced Edition
Shared: Horror · Indie · Walking Simulator

Bendy and the Ink Machine
Shared: Horror · Survival Horror · Singleplayer

Visage
Shared: Horror · Survival Horror · Walking Simulator

OMORI
Shared: Story Rich · Indie · Horror