This game has a hidden level select.
Hagane is a side-scrolling beat 'em up with a ninja/cyberpunk theme.
|This needs some investigation.|
Discuss ideas and findings on the talk page.
Specifically: The code only seems to work in the Japanese version. See if there's a way to access this in the US and EU versions.
In the config menu, play songs 04, 03, 10, and 18 in the music test. Start the game, pause, and press L+R+X to warp to the level select. To choose a level, stand under its number and press B. Level numbers containing a "B" are the bosses.
To return to the level select after selecting a level, pause and press L+R+X again.