Games like Night Clerk
Games like Night Clerk include Firewatch, What Remains of Edith Finch, Layers of Fear (2016), POOLS, and Amenti. We matched them by the tags players give Night Clerk on Steam (Adventure, Walking Simulator, Exploration, 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 · Exploration

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

POOLS
Shared: Walking Simulator · Exploration · Realistic

Amenti
Shared: Adventure · Exploration · Walking Simulator

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

Scanner Sombre
Shared: Walking Simulator · Exploration · Adventure

Psalm 5:9-13
Shared: Exploration · Walking Simulator · Horror

SOMA
Shared: Exploration · Atmospheric · Horror

Visage
Shared: Adventure · First-Person · Horror

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

Welcome to Kowloon
Shared: Adventure · Walking Simulator · Atmospheric

Outer Wilds
Shared: Exploration · Adventure · Atmospheric

PEAK
Shared: Adventure · Exploration · First-Person

Poppy Playtime
Shared: First-Person · Horror · Adventure

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

Bright Lights of Svetlov
Shared: Walking Simulator · Adventure · First-Person

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

CARIMARA: Beneath the forlorn limbs
Shared: Adventure · Exploration · 3D

DON'T SCREAM
Shared: Walking Simulator · First-Person · Exploration

Bad Parenting 1: Mr. Red Face
Shared: Adventure · Walking Simulator · 3D

Outlast
Shared: First-Person · Atmospheric · Horror

The Vanishing of Ethan Carter
Shared: Walking Simulator · Exploration · Adventure

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