Castle Level
Hold A + B + Select + Up and press Start at the title screen.

Pirate Level
Hold A + B + Select + Down and press Start at the title screen.

Castle Level
Hold A + B + Select + Up and press Start at the title screen.

Ocean Level
Hold A + B + Select + Right and press Start at the title screen.

Forest Level
Hold A + B + Select + Left and press Start at the title screen.

Continue Game Play
Hold A + B + Up and press Start at the title screen. Alternatively, press A + Start at the title screen.