I’ll add some trivia, given to me by one of the Racermate owners: “One thing we had to do, and anybody who owns an original square-front loading Nintendo will see if they turn it over; it says (something to the effect that) this Nintendo deck has been modified to work with RacerMate Challenge software and to call for service to the RacerMate number. Essentially we were selling the Nintendo as a RacerMate product and no longer a Nintendo product and provided any and all service of them.”