checked-no =>Debug Mode: On the title screen while "Press Start Button" is flashing, press <A>x4 D L R and a tone will sound. While playing the game, you can now use the following functions: * Slow Motion: Pause the game and hold <B> to continue the game in slow motion, or tap <C> to advance the game a single frame. * Toggle Invincibility: Pause the game and press <A>. =>Japanese Mode: Enter the Options menu's sound test, select Music 26 and Sound 56, then hold D+L+<A>+<B>+<C>+<START>. =>Stage Select: On the title screen, press U D L R until a harp is heard. Press START to access the main menu. On the main menu, enter one of the following codes to skip to the listed stage; make sure that Start Game is highlighted when you press <START>, though. 1-2 : Hold <A> and press <START>. 2-1 : Hold U+<B> and press <START>. 2-2 : Hold U+<A> and press <START>. 3-1 : Hold D+<B> and press <START>. 3-2 : Hold D+<A> and press <START>. 4-1 : Hold L+<B> and press <START>. 4-2 : Hold L+<A> and press <START>. 5-1 : Hold R+<B> and press <START>. 5-2 : Hold R+<A> and press <START>. Boss: Hold D+R+<A> and press <START>.