Donkey Kong Country
Sound test
Highlight the "Erase Game" option on the game selection screen. Press Down, A, R, B, Y, Down, A, Y. Press Select to change the current song.
Bonus games practice
Press Down, Y, Down, Down, Y when the game first starts, before the game selection screen appears.
Easy continue
With one life remaining, enter a level that was previously completed and lose your life. Press any button at the game over screen to return to the Cranky Kong opening screen. Enable the "Bonus games practice" code and play the bonus games to earn a surplus of lives. Then, press Start to pause game play, and press Select to return to the place where the last life was lost.
Fifty lives
Highlight the "Erase Game" option on the game selection screen. Press B, A, R, R, A, L.
Ninety-nine lives
Go to the first level and keep playing to get as many extra lives as possible. You will get a total of about ten extra lives every time you play that level. Just repeat this to collect up to ninety-nine lives.
Interactive two-player game
Highlight the "Erase Game" option on the game selection screen. Press B, A, Down, B, Up, Down, Down, Y, A and start a two-player game. The inactive player can press Select at any time to assume control.