press start then answer the question, 480 will generate one screen. arrow keys to move. 200000 is the maximum scratch can store, probably don't do more than that, it will just lag the page. there's a better version here: https://scratch.mit.edu/projects/664069015/ you can change scaling, use the slider in the top left
just me someone proposed this to be featured. why? there are so many other things that are way better, why this project all in one sprite, 100% pen no costumes. lagging? go here: https://turbowarp.org/535284220?hqpen