Can we have the ability to separate custom maps into folders?
(Even without, this project is awesome sause)
Thanks, glad you like it! You actually already can do that, just put your custom maps into folders in the custom maps folder, and the game will load them into the tabs (the same way the built-in maps are sorted by chapter).
So for example if you wanted to put a map called "MEGALOVANIA" in a tab called Undertale, the file path for the midi would be "Custom Maps/Undertale/MEGALOVANIA/MEGALOVANIA.mid"