Rong Rong - Puzzle Game (c) 1994 Nakanihon.
Rong Rong is a style of solitaire mahjong, much like 'Shanghai'... with 3 modes of play.

>>> TECHNICAL DETAILS
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Game ID : '80'
Main CPU : Z80 (@ 8 Mhz)
Sound Chips : YM2413 (@ 3.579545 Mhz), OKI6295 (@ 8 Khz)
Screen orientation : Horizontal
Video resolution : 336 x 240 pixels
Screen refresh : 60.00 Hz
Palette colors : 256
Players : 2
Control : 8-way joystick
Buttons : 3

>>> TRICKS AND TIPS
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* Enter test mode : press Right control of 1P and hold it, then 2P's A, B, C, don't raise your fingers as you press every button. After this, you will enter a secret test memu.

>>> DESIGNERS / PROGRAMMERS / STAFF
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Producer : H. Ishikawa
Director : Fuguriro
Game designers : Remember, Ogachin
Main programmer : Iwa
Programmer : Miki Chan
Character designers : Fuguriro, Mittu, Manboh, Gewalt, K2, MKZ
Sound creators : Opain, Sentakuya Ken Chan, Louis
Hardware engineer : Mr. Oz
Executive producer : E. Hayakawa

>>> OTHER GAME RESOURCES
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Game's rom.