Use turbo mode (shift and click green flag at the same time) This simply creates a random art piece Press r to redo
There is a 1/1.6002259e+24 chance to get a mona lisa, good luck! If you want to make your computer grind for mona lisa, this goes faster and has an auto feature. https://scratch.mit.edu/projects/734967241/ If you do get it post it in the comments
