This game uses a production Zaccaria MPU that is completely unrelated to the Gen1 (1b1110,1b1110/0, 1b1110/1, 1b1110/1a) board set. It's based on a different CPU (the National Semiconductor 8060 instead of the Signetics 2650a), and combines CPU, Driver, and Power Supply functions all into one huge board. So far, no one has been able to determine if Zaccaria gave this MPU its own official designation.Only three games had this unique MPU. The other two games are Zaccaria's 1978 'Ski Jump' and Zaccaria's 1979 'Space City'.