
Alpha One © 1983 Atari.
Main CPU : MOS Technology M6502 (@ 2.5 Mhz)
Sound Chips : (2x) POKEY (@ 1.25 Mhz)
Screen orientation : Horizontal
Players : 1
Control : dial
Buttons : 1

This was the second prototype of Major Havoc, the first was called "Tollian's Web".