Mayday!! © 1981 Hoei.
Main CPU : Motorola M6809 (@ 1 Mhz)
Sound CPU : M6808 (@ 894.75 Khz)
Sound Chips : DAC
Screen orientation : Horizontal
Video resolution : 294 x 239 pixels
Screen refresh : 60.00 Hz
Palette colors : 16
Players : 2
Control : 8-way joystick
Buttons : 3
Williams considered this game to be an 'infringement' on their copyright of Defender which led to the halting of Mayday!!'s production.
Default highscore table :
1 MIT 20000
2 NOB 15000
3 NUN 10000
4 HON 7000
5 IKU 5000
Dwayne Richard holds the official record for this game with 6,235,300 points.