Invincibility
Enter 77 as a debug number, then press Up, Down before exiting the debug screen.
Half game with many satellites
Enter 83 as a debug number.
Extra lives, bombs, and power
Enter the debug number for the desired level. Hold I + II and press Start to begin game play with 10 lives and 10 bombs. Additionally, you will continue from the previous location instead of the previous checkpoint after losing a life.
Level select
Enter 00 - 09 as a debug number.
Area 0, 30 continues
Enable the "Sound test" code. Press I, II, Select twenty two times. Then, hold Select + Run until gameplay begins.
Debug mode
Enable the "Sound test" code. Press I, II then tap Select repeatedly until the debug screen appears. The following debug functions may now be enabled.
Sound test
Hold Select and alternately tap Left, Right repeatedly until "Sound 01" appears.
View ending sequence
Hold Right and quickly tap Run at the title screen.
Mode select
Hold Select while tapping I, II repeatedly at the title screen. Press Select to choose between four difficulty levels. Begin game play by holding Run and press Select. Alternatively, enable the Turbo switches and press I + II to start the first part of the code.
Unlimited continues
Enable the "30 continues" code. When the current game ends with 30 continues remaining, press Select, Select, then hold Select + Run until the game restarts.
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