looking pretty close to backroom level 10 : r/backrooms

Steam Community :: Inside the Backrooms

Backrooms Level 0 build (need feedback) - Creations Feedback - Developer Forum

Escape the Backrooms on Steam

backrooms level 10000 [the Reddit version]

Level 10 (Archived) - The Backrooms

The Backrooms - Wikipedia

Level 10, Backrooms Depths of Reality Wiki

Steam Workshop::The Backrooms - Complex

Entity 10: Skin-Stealers, Backrooms Wiki

Backrooms Level 10: Below the Surface : r/backrooms