infinite staircase brown: https://scratch.mit.edu/projects/1261883196 purple: https://scratch.mit.edu/projects/1263293125 red: https://scratch.mit.edu/projects/1262350537 green: https://scratch.mit.edu/projects/1262351877 yellow: https://scratch.mit.edu/projects/1262359443 studio: https://scratch.mit.edu/studios/51215001/
