This reminds me of Level 3999 : r/LiminalSpace

Level 3999 - The True Ending, Escape The Backrooms Wiki

Level 399: The Neon Paradise, Backrooms Wiki

Against the Grain v31 #2 April 2019 by against-the-grain - Issuu

Level 399: The Neon Paradise, Backrooms Wiki

Level 3999, Roblox Liminal Spaces Wiki

The REAL Backrooms exit (Level 3999)

LEVEL 3999: Backrooms REAL EXITS ?, How to Survive Level 3999 Of The Backrooms

Level 3999? : r/backrooms

I was gonna show this when I got more done, but I can't wait. This is the biggest project I've ever done, The full backrooms! 200+ planned levels and 3 game modes