Use left and right arrows to steer the crab. Try to catch the donuts and if you do press up arrow to restart. Also remember that crabs walk sideways and that the donuts follow a certain pattern so you need to make a pattern of your own, but lose that pattern and no more donuts!
Good luck with the crab with the sideways walk but you do get used to it. Also feel free to remix and leave whatever comment as long as it is your opinion.