You're inside Baldi's real Classic schoolhouse, rebuilt in Garry's Mod from your own copy of Baldi's Basics Classic Remastered, with your Physics Gun in hand.
What you get
Baldi's real school as a Garry's Mod map: every room and hallway, his walls, floors, posters, windows, lockers, desks and vending machines, made on your PC from your copy of Baldi.
7 notebooks and the You Can Think Pad: Baldi reads each problem in his own voice. From the second notebook, the third problem is impossible.
The real Baldi: get one answer wrong and he comes after you, slapping his ruler and getting angrier. He heads for any noise and straight for you when he sees you. If he catches you, the school resets.
Your Physics Gun: fling props at Baldi to stop him for a few seconds, or wall off a hallway (he swats barricades aside).
New: BSODA and Zesty Bars, right where Baldi's Classic school leaves them: a BSODA and a Zesty Bar in the cafeteria, another Zesty Bar in a faculty room, and a quarter. Walk up to one to take it, press 2 or 3 to hold it, then click.
BSODA: the fizz flies down the hall and carries Baldi away with it.
Zesty Bar: your staminometer fills past the top, so you can sprint much longer.
Quarter: press E on a BSODA or Zesty machine for one more. Each machine sells one, then it's out of stock.
The escape: with every notebook the exits open. Reach each one; the last one gets you out.
Baldi's school music, the staminometer and Baldi's own HUD art. Solo.
You need Garry's Mod and Baldi's Basics Classic Remastered (both on Steam). Nothing from Baldi's game is shipped: on your first Play, Melty builds the school from your own copy, then starts the game.
Credits: Baldi's Basics Classic Remastered by Basically Games (Micah McGonigal), read from your own copy. Garry's Mod by Facepunch Studios. Made by Bighead Angees on Melty.