Had this one on my 6128. One of the last £1.99 titles and it always seemed a neat idea but was a very slow Speccy port. But as it was a Flippy Flippy tape I also discovered the Speccy version was also lacklustre.
Perhaps someone could port this properly to the CPC? It's a neat idea and on the 64 (the original) I really like it!
http://www.youtube.com/watch?v=fbaTqfub7Ac