WASD/arrow keys for laptop/desktop, touch where you want to go on mobile [-LAPTOP/DESKTOP ONLY- G to turn graphic and music effects on/off. Doing this reduces lag. I would advise you to turn graphic effects off on levels that are just dots, as the effects make it hard to see the dots. Press G twice to get a new song.] 30 levels. There are places you can get stuck in. If you find yourself in one of these places, just hit 'R' to restart the level.