Baseplate 2 is a secret floor that is just like Baseplate 1. It includes the literally nothing sign. This floor does use the new baseplate texture. Players are rewarded a badge when they walk outside of the elevator. If you get this floor look at the top of the elevator and you may find something.
This floor has a 99 in 20,000 appearance.
Fun fact: This floor has a chance of Baldi Spawning.