Flag to render. Space to rerender. L/R arrows to switch levels. To add your own levels to this, just make a txt document, and use the key inside a comment in the key sprite. See inside, and then right click the list (click with 2 fingers if using Mac) and select import. Select your new txt document and add the level height to the corresponding level number of the level heights list, you’re done.
Mostly @Will_Wam. I made the code. @griffpatch gave me the inspiration. NOTE: For use in the upcoming PC game: Super PC Bros. 7th when searching level viewer WHAT