Use arrow keys to move. You can wall jump, collect keys to open doors and eat apples! Green flags are checkpoints. Have fun!
Thanks to a lot to @griffpatch for the Code a platformer game series: https://www.youtube.com/playlist?list=PLy4zsTUHwGJIATydhFeZa5pspLZR7yE__ Also thanks to another of griffpatch's videos Scratch effects that pop: https://www.youtube.com/watch?v=KWZldY-Xtpw