Use the arrow keys or WASD and hit the notes on time. Enter this engine and go to "- CHART -". When inside "- CHART -", there are many options to configure, including the song's chart. You can choose between Hard Coded (with blocks) or Non-Hard Coded (with lists). Note Skins: "Arrow", "Cube", "Circle". I found something cool: https://scratch.mit.edu/projects/721917881/remixtree/
