Joe Kaminkow told us that 'The Simpsons' was supposed to be their first game to have a dot matrix display (DMD). However, President and CEO Joe Keenan worried that development of the DMD might not be ready in time for this game and problems occurring had they rushed it into production could put the company out of business. Their next production game, Data East's 1991 'Checkpoint', introduced the DMD to pinball machines. We previously listed the Manufacture Date as October, 1990. This game was produced from September 1990 to February 1991.