Densetsu no Stafy is a platform game for the Game Boy Advance developed by Tose and published by Nintendo. Released on September 6, 2002, the game follows a young starfish named Stafy as he explores underwater worlds and battles enemies. Originally intended for the Game Boy and Game Boy Color, the project was ultimately reimagined for the Game Boy Advance, establishing Stafy as a notable character in Nintendo's lineup.
Densetsu no Starfy for the Game Boy, and later for the Game Boy Color was a tentative Starfy title which was eventually canceled, though it was eventually released in the form of Densetsu no Starfy for the Game Boy Advance on September 6, 2002. Any initial plans of releasing Densetsu no Starfy for the Game Boy Color were abandoned in anticipation of the release of the Game Boy Advance.