Mahjong Chinmoku no Hentai (c) 05/1990 Nichibutsu.
A mahjong game with a war theme and random bonus items. The 'manzu' suit of tiles are in English rather than Chinese.

>>> TECHNICAL DETAILS
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Main CPU : Z80 (@ 5 Mhz)
Sound Chips : YM3812 (@ 2.5 Mhz), DAC (@ 2.5 Mhz)
Screen orientation : Horizontal
Video resolution : 512 x 240 pixels
Screen refresh : 60.00 Hz
Palette colors : 256
Player : 2

>>> TRIVIA
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The title of this game translates from Japanese as 'Mahjong Silent Formation'.

>>> OTHER GAME RESOURCES
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Game's rom.