Nazo Puyo Arle no Roux is a puzzle game for the Sega Game Gear. It's a development edition, meaning it's a pre-release version that may contain bugs or unfinished elements.  The game is part of the Puyo Puyo series known for its colorful characters and challenging gameplay.  The core mechanic involves dropping colored Puyo onto a playing field, aiming to create chains of four or more of the same color to clear them.  The faster you clear Puyos, the more you'll hinder your opponent. Sega developed and published this game in Japan. 

Nazo Puyo Arle no Roux (Japan) (Development Edition)

Nazo Puyo 2 (Japan)