Silverball Mania © 1980 Bally.
Bally MPU AS-2518-35
Model Number : 1157
Main CPU : M6800 (@ 475 KHz)
Sound CPU : M6802 (@ 895 KHz)
Sound chips : General Instrument AY8910 (@ 895 KHz)
Released in February 1980. 10,350 units were produced.
The development of this game took 19 months! (started in June 1978).
One of the play-field plastics shows artist Kevin O'Connor's Jeep Cherokee drawn in chrome. Some of the reflections in the silver balls on the sides are of O'Connor himself, who wore a beard for many years.
The game came to O'Connor as a blank white-wood and he designed the art from an idea he got from a comic by a comic who drew everything in chrome, tieing in well with the pinball.