Games like Gnome
Games like Gnome include Summer of '58, The Exit 8, Firewatch, September 7th, and Fears to Fathom - Ironbark Lookout. We matched them by the tags players give Gnome on Steam (Horror, Immersive Sim, Exploration, Atmospheric, and Cinematic): closest matches first, and among equally close ones the better-known games.

Summer of '58
Shared: Horror · Atmospheric · Cinematic

The Exit 8
Shared: Exploration · Horror · Immersive Sim

Firewatch
Shared: Atmospheric · Exploration · Walking Simulator

September 7th
Shared: Horror · Exploration · Walking Simulator

Fears to Fathom - Ironbark Lookout
Shared: Horror · Atmospheric · Exploration

The Complex: Expedition
Shared: Horror · Exploration · Realistic

The Cabin Factory
Shared: Horror · Immersive Sim · Atmospheric

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

Subliminal
Shared: Atmospheric · Horror · Realistic

DON'T SCREAM
Shared: Horror · Atmospheric · Exploration

Platform 8
Shared: Simulation · Exploration · Immersive Sim

Amnesia: A Machine For Pigs
Shared: Horror · Atmospheric · Exploration

Scanner Sombre
Shared: Horror · Exploration · Atmospheric

The Mortuary Assistant
Shared: Horror · Atmospheric · Simulation

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

Lethal Company
Shared: Horror · Exploration · First-Person

MiSide
Shared: Horror · Atmospheric · 3D

Psalm 5:9-13
Shared: Horror · Exploration · Atmospheric

SOMA
Shared: Horror · Atmospheric · Exploration

HELLMART
Shared: Horror · Exploration · Immersive Sim

Kiosk
Shared: Horror · Immersive Sim · Atmospheric

Amnesia: The Bunker
Shared: Horror · Immersive Sim · Atmospheric

Zoochosis
Shared: Horror · Atmospheric · 3D

Millennium Dream
Shared: Exploration · Atmospheric · Walking Simulator