I have written numerous mathematical games, but the Nubble! family of programs remains far and away the most popular. The original Nubble! software is based on a boardgame invented by Edgar Fineberg and Jack Berkovi, but the software version of the game is even more compulsive and is loved by teachers and pupils alike.

Full details about all the mathematical games that I have written, including Nubble!, are available on the Virtual Image website at: www.virtualimage.co.uk.