Supplementary to my comments on you tube page , I take your point about with respect to it being worn out once you had got skilled enough on the hardest level and at the fastest speed , the game just reaches a plateaux and you can carry on ad infinitum , well when I did it on toughest setting at speed 3 I looped it about 5 times and then gave up cos I had got bored. Still definitely holds my respect for good little memorable game as a kid .