Williams System 7
Introduced in 1981, System 7 evolved from System 6 with the same Motorola 6808 CPU but added electronically-controlled coin lockout, improved diagnostic features, and better speech synthesis support. Notable games include Pharaoh (1981), Solar Fire (1981), Hyperball (1981), Defender (1982), and Joust (1983).
Titles using Williams System 7 (17)
Laser Cue
Williams, 1984
Star Light
Williams, 1984
Firepower II
Williams, 1983
Joust
Williams, 1983
Rat Race
Williams, 1983
Time Fantasy
Williams, 1983
Cosmic Gunfight
Williams, 1982
Defender
Williams, 1982
Thunderball
Williams, 1982
Varkon
Williams, 1982
Warlok
Williams, 1982
Barracora
Williams, 1981
Black Knight
Williams, 1981
Hyperball
Williams, 1981
Jungle Lord
Williams, 1981
Pharaoh
Williams, 1981
Solar Fire
Williams, 1981