checked-no =>Extra Continues: On the title screen, press L L <B>x3 <C>x3 <START>. =>Two Player Final Battle: If you are playing the two player mode and give different answers to the final boss, he'll make you fight against each other. =>Alternate (Bad) Ending: When you meet Mr. X, agree to join him. After you finish the game you'll get the "bad" ending. =>Stage Select & Extra Lives: Highlight Options on the main menu, then hold CNTRL II: <A>+<B>+<C>+R and press CNTRL I: <START>. You will now be able to select your starting level and number of extra lives. =>Extra Difficulty Modes: On the title screen, hold CNTRL II: <A>+<B> and press CNTRL I: <START>. You should unlock the Easy and Mania modes.