Level 3999 is the 4000th level of the Backrooms and the final confirmed level in the Backrooms as it is at the end of Cluster 3, the final levels.
Level 3999's ending
SURVIVAL LEVEL 0
- SAFE
- SECURE
- DEVOID OF ENTITIES
Description
Level 3999 is an arcade with a size of 10,000,000,000 mi². Most of the games are well known such as Pacman, Mario and Donkey Kong. But there are others such as Ms. Pacman, Double Dragon and Lunar Lander. Even one person spotted Polybius, but that is for another time
The level consists of 3999-1, 3999-2 and 3999-3. -3 is advised not to go to as the area is filled with toxic gas and high levels of Uranium, the only level to feature Uranium. If you are careful enough however you can come across Neon Water
The level is mostly safe, however very hard to enter as you have to go through a specific wall in Level ! to get there.
Noclipping out leads you to Level !
Colonies and Outposts
Singularity Point Base 1:
Singularity Point's main base contains 30 inhabitants. Their goal here is to help travelers get to the exit.
Entrances
Heading through a purple glitched wall in Level !Walking through the wall should bring you to a loading screen. After 15 Minutes-12 Hours of waiting, you should be dropped of into Level 3999 (This is an outdated part, as I got rid of the loading in the beggining.) You can also enter through Level 153 and Level 1207. Another way in is through the rainbow slides in Level 806. You also have a 70% chance of ending up here after exiting level 3998.
Exits
If you walk north for 3 minutes nonstop, you will find the Singularity Point Base. Ask a member to guide you north. If you see glass doors, that is your escape. If not, you need to keep walking north. This exit will take you back to Real World Or in rare cases Level infinity . Another way is to find very rare machine with minecraft running on it, if you play on it for 1 hour, you will be transported to level 1248, no-clipping out leads you to Level !