Games like Lux Muris
Games like Lux Muris include The Exit 8, Escape the Backrooms, Scanner Sombre, Firewatch, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Lux Muris on Steam (Exploration, Hidden Object, Point & Click, Walking Simulator, and 3D): closest matches first, and among equally close ones the better-known games.

The Exit 8
Shared: Exploration · Walking Simulator · Horror

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

Scanner Sombre
Shared: Exploration · Walking Simulator · Horror

Firewatch
Shared: Walking Simulator · Exploration · First-Person

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

The Room 4: Old Sins
Shared: Point & Click · Hidden Object · Exploration

Lethal Company
Shared: Exploration · First-Person · Horror

What Remains of Edith Finch
Shared: Walking Simulator · Exploration · First-Person

The Room Two
Shared: Point & Click · Hidden Object · Horror

September 7th
Shared: Exploration · Walking Simulator · Horror

The House of Da Vinci
Shared: Hidden Object · Exploration · Point & Click

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

Fears to Fathom® - Scratch Creek
Shared: Horror · Walking Simulator · First-Person

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

Platform 8
Shared: Walking Simulator · Hidden Object · Exploration

The Room
Shared: Point & Click · Hidden Object · Horror

Fears to Fathom - Woodbury Getaway
Shared: First-Person · Horror · Exploration

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

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

PEAK
Shared: Exploration · First-Person · 3D

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

Dollmare
Shared: 3D · Horror · First-Person

True Fear: Forsaken Souls Part 1
Shared: Exploration · Hidden Object · Point & Click

[Chillas Art] The Convenience Store
Shared: Horror · Psychological Horror · Casual