Games like Something In The Well
Games like Something In The Well include Firewatch, What Remains of Edith Finch, The Mortuary Assistant, Scanner Sombre, and Layers of Fear (2016). We matched them by the tags players give Something In The Well on Steam (Adventure, Horror, Demons, Walking Simulator, and Atmospheric): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Atmospheric · Walking Simulator

What Remains of Edith Finch
Shared: Walking Simulator · Atmospheric · Adventure

The Mortuary Assistant
Shared: Horror · Demons · Atmospheric

Scanner Sombre
Shared: Horror · Walking Simulator · Adventure

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

SOMA
Shared: Horror · Atmospheric · Dark

Killer Frequency
Shared: Adventure · Horror · Simulation

Bad Parenting 1: Mr. Red Face
Shared: Adventure · Horror · Walking Simulator

Iron Lung
Shared: Horror · Atmospheric · Adventure

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

The Forest
Shared: Horror · Adventure · Exploration

Outlast
Shared: Horror · Atmospheric · Adventure

Among the Sleep - Enhanced Edition
Shared: Horror · Adventure · Atmospheric

MOLE
Shared: Horror · Adventure · Simulation

Amenti
Shared: Adventure · Horror · Atmospheric

Visage
Shared: Horror · Adventure · Atmospheric

Platform 8
Shared: Adventure · Walking Simulator · Simulation

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

Little Nightmares
Shared: Horror · Adventure · Atmospheric

Lethal Company
Shared: Horror · Exploration · First-Person

The Long Dark
Shared: Adventure · Atmospheric · Exploration

Journey
Shared: Adventure · Atmospheric · Walking Simulator

Blair Witch
Shared: Adventure · Horror · Walking Simulator

Cairn
Shared: Adventure · Stylized · Exploration