Press the green flag a couple of times to start. Click on Square, Circle or Line for what shape you want. Click on Lava or Ground for what you want the platform to be (you can stand on ground, but lava kills you). Press Space to start the line or to stamp the square or circle. Press Play to play your level. The goal is to get all the way to the right edge. Click restart to erase all of the stuff you made and to make a new level. You can restart while you are playing you level. Press edit to edit what you just made. While you are making your platformer, use the left arrow key to make the size smaller and the right arrow key to make the size bigger. The shapes follow your curser.
Code all by me. Please let me know in the comments if you have any suggestions to make the game better or game ideas because I am running out of ideas.