Sparkman spawns on a portal of sorts. Your goal is to get to the other portal located somewhere on the level, collecting discs along the way. If you happen to touch a bomb or other hazard, you'll reset at the beginning of the level. There's also a reset button if you should find yourself trapped somehow. Run and jump with the [arrow] keys, and you can go through the sides and top of the screen Pac-man style. Pushing down stops the screen from scrolling as you move, which then allows you to loop through from one side of the screen to the other where you might not have been able to before. You'll have to use this trick in various creative ways to get where you need to go.