I found this secret level, it's level -977638387337 I'm trapped and I've seen many facelings here : r/backrooms

The Backrooms: The First 10 Levels (Fully Explained)

LcY712's Author Page - The Backrooms

4859 best r/backrooms images on Pholder

Level 404: Not Found, Backrooms Wiki

Steams gemenskap :: Guide :: level and entity ideas

backrooms

The original lore didnt have entities : r/backrooms

backrooms

Level 699: The Azure Deep, Backrooms Wiki

Steam Community :: Guide :: level and entity ideas

The Actual Backrooms