At the title screen, hold I + Select. Keep holding the buttons while the demo of planes pass through the title screen. When the demo is over and the 10 blue planes come from the left again, release Select and press Run. If done right, you'll have 8 continues instead of 2.
Contributed By: ReyVGM.
At the title screen, push II, II, II, II, II, I, I, I, I, I, I, select, select. This will activate the level select option. Then push the following button combinations to start on the desired level:
Effect Code Level 2 Hold I, press run Level 3 Hold II, press run Level 4 Hold I + II, press run Level 5 Hold select, press run Level 6 Hold I + select, press run Level 7 Hold II + select, press run Level 8 Hold I + II + select, press run
Contributed By: HyperSilence.
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