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Ryuu Kyuu (琉球) is a puzzle game developed by ASCII and Login Soft for various Japanese home computers. It was ported to Sega System 16 arcade hardware by Success and Sega in 1990. Face ported it to the Sega Game Gear the following year, with Sega releasing it overseas as Solitaire Poker. The Game Gear version features a two-player mode using the Gear-to-Gear Cable.