Spelunker II - 23 no Kagi © 1986 Irem.
Irem M-62 system hardware
Main CPU : Zilog Z80 (@ 4 Mhz)
Sound CPU : Motorola M6803 (@ 894.886 Khz)
Sound Chips : (2x) General Instrument AY8910 (@ 894.886 Khz), (2x) MSM5205 (@ 384 Khz)
Screen orientation : Horizontal
Video resolution : 384 x 256 pixels
Screen refresh : 55.00 Hz
Palette colors : 768
Players : 2
Control : 8-way joystick
Buttons : 2
Released in October 1986 by Irem, under license from Broderbund.
The subtitle of this game translates from Japanese as '23 Keys'.
1. Spelunker (1986)
2. Spelunker II - 23 no Kagi (1986)
Designed & programmed by: Tim Martin
CONSOLES:
Nintendo NES: Unreleased prototype.
Game's ROM.