Momotarou Densetsu G - Gold Deck wo Tsukure! is a Japanese Game Boy Advance game.  Without more information, its genre and specific gameplay details remain uncertain.  The title suggests a card game or collectible card game element based on its Japanese title, which translates to something along the lines of "Momotaro Legend G - Create the Gold Deck!"  The "Momotaro" element suggests a theme based on the Japanese folktale of Momotaro, but how it's incorporated into the game mechanics is unknown.  The developer and publisher would need to be researched to determine more about its origins and release.

Momotarou Densetsu G - Gold Deck wo Tsukure! (J)(Independent)

Model ZX in Sonic Battle