You should hear a chime if the code was entered correctly. A new difficulty setting will appear on the Options screen. Extra Lives Enter the Original Music and Expert Mode codes in order. If you did it right you'll hear a tone and 9 lives will appear. Make sure that these music settings are set when you leave the options screen.
Press start to start the game.
When your standard weapon is powered up to level 4, you will hear the old Castlevania Music until you get hit. These codes allow you to play as Eric in easy mode with 9 lives. These codes allow you to play as John in easy mode with 9 lives. To do a Super jump press and hold DOWN then press B and you'll jump high. You won't be able to move left or right, but you can't get hurt.