Games like Floor 12
Games like Floor 12 include VERGE:Lost chapter, Killer Frequency, Platform 8, Beat Cop, and Bright Lights of Svetlov. We matched them by the tags players give Floor 12 on Steam (Simulation, Adventure, Walking Simulator, Cinematic, and 1980s): closest matches first, and among equally close ones the better-known games.

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

Killer Frequency
Shared: Adventure · Simulation · 1980s

Platform 8
Shared: Adventure · Simulation · Walking Simulator

Beat Cop
Shared: Adventure · Simulation · Indie

Bright Lights of Svetlov
Shared: Walking Simulator · Adventure · 1980s

Firewatch
Shared: Adventure · Walking Simulator · Indie

Not For Broadcast
Shared: Adventure · Simulation · 1980s

Internet Cafe Simulator
Shared: Simulation · Indie · Adventure

Crime Scene Cleaner
Shared: Simulation · Gore · Adventure

Mosaic
Shared: Adventure · Walking Simulator · Indie

Viscera Cleanup Detail
Shared: Simulation · Gore · Indie

Totally Accurate Battle Simulator
Shared: Simulation · Adventure · Indie

[Chillas Art] The Closing Shift
Shared: Simulation · Adventure · Walking Simulator

Wobbly Life
Shared: Adventure · Simulation · Indie

DEATH STRANDING DIRECTOR'S CUT
Shared: Walking Simulator · Cinematic · Adventure

Still Wakes the Deep
Shared: Walking Simulator · Gore · Adventure

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

The Stanley Parable
Shared: Walking Simulator · Indie · Adventure

I'm counting to 6...
Shared: Simulation · Adventure · Walking Simulator

妄想症:Deliver Me
Shared: Adventure · Simulation · Indie

Rise of Insanity
Shared: Adventure · Simulation · Indie

Investigator
Shared: Adventure · Simulation · Walking Simulator

Journey
Shared: Adventure · Indie · Walking Simulator

Autumn Dream
Shared: Walking Simulator · Adventure · Indie