Games like Inside the Flesh Engine
Games like Inside the Flesh Engine include Firewatch, The Forest, What Remains of Edith Finch, Lethal Company, and Escape the Backrooms. We matched them by the tags players give Inside the Flesh Engine on Steam (Adventure, Walking Simulator, Exploration, Dungeon Crawler, and Mystery Dungeon): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Exploration

The Forest
Shared: Adventure · Survival · Exploration

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

Lethal Company
Shared: First-Person · Exploration · Horror

Escape the Backrooms
Shared: Adventure · Exploration · First-Person

Subnautica 2
Shared: Exploration · Adventure · Survival

Five Nights at Freddy's: Security Breach
Shared: First-Person · Exploration · Adventure

Cairn
Shared: Exploration · Adventure · Stylized

The Long Dark
Shared: Exploration · Adventure · Survival

Outlast
Shared: First-Person · Adventure · Survival Horror

SOMA
Shared: Exploration · Horror · First-Person

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Exploration · First-Person

Still Wakes the Deep
Shared: Walking Simulator · First-Person · Adventure

The Exit 8
Shared: Exploration · Walking Simulator · First-Person

The Beast Inside
Shared: Adventure · First-Person · Horror

Layers of Fear (2016)
Shared: Walking Simulator · Adventure · First-Person

Sons Of The Forest
Shared: Survival · Adventure · Exploration

PEAK
Shared: Adventure · Exploration · First-Person

Scanner Sombre
Shared: Walking Simulator · Exploration · Adventure

Inside the Backrooms
Shared: Adventure · Exploration · Survival Horror

Slender: The Arrival
Shared: First-Person · Walking Simulator · Adventure

Subnautica
Shared: Exploration · Adventure · Survival

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

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · First-Person · Exploration