Games like Missing
Games like Missing include Firewatch, What Remains of Edith Finch, The Cabin Factory, Welcome to Kowloon, and Layers of Fear (2016). We matched them by the tags players give Missing on Steam (Adventure, Simulation, Walking Simulator, 3D, and First-Person): closest matches first, and among equally close ones the better-known games.

Firewatch
Shared: Adventure · Walking Simulator · Atmospheric

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

The Cabin Factory
Shared: Walking Simulator · Adventure · Horror

Welcome to Kowloon
Shared: Adventure · Walking Simulator · Atmospheric

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

MiSide
Shared: First-Person · 3D · Horror

Who's at the door?
Shared: Adventure · Simulation · Walking Simulator

Visage
Shared: Horror · Adventure · First-Person

[Chillas Art] The Convenience Store
Shared: Adventure · Simulation · Horror

Platform 8
Shared: Adventure · Walking Simulator · Simulation

Scanner Sombre
Shared: Walking Simulator · Adventure · First-Person

Blair Witch
Shared: Adventure · Horror · First-Person

Outlast
Shared: First-Person · Horror · Atmospheric

From The Darkness
Shared: Horror · First-Person · Walking Simulator

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

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

Dollmare
Shared: Simulation · 3D · First-Person

POOLS
Shared: Walking Simulator · Realistic · Atmospheric

Summer of '58
Shared: Walking Simulator · Horror · Atmospheric

Subliminal
Shared: Realistic · Atmospheric · First-Person

The Death | Thần Trùng
Shared: Adventure · Horror · Realistic

VERGE:Lost chapter
Shared: Walking Simulator · Adventure · Simulation

Garten of Banban
Shared: First-Person · Horror · 3D

Ready or Not
Shared: Realistic · First-Person · Horror