The game was written for the 6809 using a 6800 as a math co-processor.
Bally / Sente SAC-II hardware
Main CPU : Motorola M6809 (@ 1.25 Mhz), 68000 (@ 8 Mhz)
Sound CPU : Zilog Z80 (@ 4 Mhz)
Sound Chips : (6x) CEM3394 (@ 8 Mhz)
Screen orientation : Horizontal
Video resolution : 256 x 240 pixels
Screen refresh : 60.00 Hz
Palette colors : 1024
Players : 1
Control : stick
Buttons : 5
Released in February 1986.
This game is the only one to run on the Bally / Sente SAC-II hardware.
Jim Turner started writing this game and Owen Rubin finished it after Jim left Sente.
The original name for this game was 'D'Arc Angel' but Marketing rejected it.
There were only 10 units built at Dann Services (a rehab center).
It was the first game to successfully charge a $1.00. It was one of the first games to actually move and a pre-cursor to the simulators that followed.