Hold Select and press Run at the title screen. Select a difficulty
level, then press Run to begin game play.
With a TurboTap, hold Up + Run + I on controller two while
holding Down + Select on controller one at the title screen.
With those buttons held, press Run on controller one . Note:
The Turbo switches must be down on both controllers. This
code may only be enabled when the title screen appears for
the first time after the game loads.