At the title screen, press Up, Up, Down, Down, Left, Right, Left, Right, B, A. You should hear a chime if the code was entered correctly. A new difficulty setting will appear on the Options screen.

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.

On option screen play BGM (Background Music) 05 and play SE (sound effects) 073. 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.

Eric's Special Moves:
Press and hold A then press LEFT, RIGHT to twirl the spear. Keep pressing LEFT, RIGHT to keep spinning it.

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. You can still hurt your enemies in mid-jump.

John Morris's Special Moves:
To swing from a ceiling, jump and press DIAGONAL RIGHT or DIAGONAL LEFT to attach to the ceiling.

These codes allow you to play as Eric in easy mode with 9 lives.

Key 1 = coat of arms 2 = axe 3 = jewel - = blank

Stage 2: - 2 1 1 - - 1 1 2 3 1 3 2 2 3 -
Stage 3: - 1 1 - 2 - 1 - 3 - 1 1 1 2 2 2
Stage 4: 2 - - 1 3 - - 2 3 1 - 2 - - 1 2
Stage 5: - 1 2 2 2 - 1 - 3 2 1 1 1 2 3 2
Stage 6: 2 1 2 3 1 - - 3 3 3 1 - 1 - 3 2

These codes allow you to play as John in easy mode with 9 lives.

Key 1 = coat of arms 2 = axe 3 = jewel - = blank

Stage 2: - - 2 - 3 - - 3 2 2 - 3 - 2 1 -
Stage 3: 2 2 1 1 - 1 1 1 2 3 2 - 3 - - -
Stage 4: - 1 1 2 3 1 1 1 3 - 1 3 2 2 - -
Stage 5: - 1 2 1 3 1 1 1 3 1 1 3 2 2 - 2
Stage 6: - 1 2 1 1 1 1 - 3 2 1 1 1 2 - -