Tap the screen or press any key to generate a new avatar each time. Turbo mode is useful when you're competing against your friends to see who can get the most full/blank cubes. Save code options are in the bottom left and right corners. If you figure out how the save code works, you can generate some things that weren't supposed to be possible. You're not supposed to do this, but try putting random numbers into the save code. It's pretty fun ;) Check out my Flat Art Generator: https://scratch.mit.edu/projects/398642721/