Mario Kart Arcade GP

Finish all the special cups.

If you slip on a banana, and are about to spin out, hit the brakes. You will stop (not spin out), a music note inside a balloon will appear next to your driver, and you will have saved yourself a lot of time.

Finish all the regular 150cc cups.

If you finish the regular cups, plus the Special Cups, 150cc Mode, and the Special 150cc Mode, you'll unlock a different set of credits.

During the countdown from 3..2...1... GO! Step on the gas pedal as soon as GO! appears. This will give you the initial startup boost.