Ryuukyuu is a Sega Game Gear game released in Japan, belonging to a specific genre yet to be identified definitively. Details about the original creators, development history, and precise gameplay mechanics are not readily available. It is a less-known title even among Sega Game Gear enthusiasts. Sega was the publisher for the Japanese market.

Ryuukyuu (Japan)

RoboCop versus The Terminator (USA, Europe)