OpenBald Classic is a very bare-bones clone of Baldi's Basics. (originally by mystman12, of course)

The game is unfinished - and is getting a re-implementation bringing it from Godot 3.5.2 LTS over to Godot 4, along with a makeover to the code, the visuals, and the gameplay.

I warn you, if you know how Godot works, do not look at the code for this. You will not have a good time. Unless you're making fun of it. In that case, invite me.