Enter one minute "caravan" mode
The code is in two parts where all four buttons must be pressed simultaneously on the title screen. Entering the code Up + Select + I + II, then Down + Select + I + II will start a hidden one-minute caravan.
Level select
Hold Up and press Select at the title screen. Then, hold Down and press Select, hold Left and press Select, hold Right and press Select. Continue pressing Select to display the level selection screen.
