Idol no Himitsu (c) 1989 Digital Soft.
A mahjong game.

>>> TECHNICAL DETAILS
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Main CPU : Z80 (@ 5 Mhz)
Sound Chips : AY8910 (@ 1.25 Mhz), DAC
Screen orientation : Horizontal
Video resolution : 512 x 224 pixels
Screen refresh : 60.00 Hz
Palette colors : 4096
Player : 2
Control : mahjong keyboard

>>> TRIVIA
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Released in March 1989.
The title of this game translates from Japanese as 'Idol's Secret'.

>>> OTHER GAME RESOURCES
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Game's rom.