Bally MPU AS-2518-35 (Sound Module -32)
Model Number : 1119

Main CPU : M6800 (@ 475 MHz)
Sound Chip : Custom

Released in August 1978. 10,330 units were produced.

The development of this game took 19 months (started in February 77).

Lost World was the first machine to use the second-generation AS-2518-35 hardware. It was also First machine to use electronic sounds, replacing chimes, and the first machine to use a photographic backglass.

At a Chicago Expo, artist Paul Farris stated humorously that the backglass figures were based on himself and his wife.