arrow keys to move. As you see there are 3 levels easy, medium, and hard. Easy level is the easiest (sometimes I think it should be called super easy) . In easy level, the character will go quiet slow but not to slow. In medium it goes fast but you will not reset your progress. In hard level you will go fast as well but the hard part is that you will back to the start if you touch the line
Your aim is get either "seconds touched the line"(in levels easy and medium) or "tries"(in hard level) to lowest possible number. I learned most coding at school. Try some of my other games and don't forget to like the game!