Director Shigeru Miyamoto conceived a 3D "Mario" game during the production of "Star Fox" (1993). "Super Mario 64" development lasted approximately three years; one was spent on designing, the next two on direct work. The visuals were created using the Nichimen N-World toolkit, with Miyamoto aiming to include more details than earlier games. The score was composed by Koji Kondo. A multiplayer mode featuring Mario's brother Luigi was cut, and rumors spread of his inclusion as a hidden character. Along with "Pilotwings 64", "Super Mario 64" was one of the launch games for the Nintendo 64. Nintendo released it in Japan on June 23, 1996, and later in North America as well as Europe.