At the title screen, press Up, Up, Down, Down, X, X, Left, Right, Left,
Right, X, Triangle, X, Triangle ( This is the World Select cheat ). The
option box should turn red. Start a game, and go to World 1, Stage 3,
and defeat the dragon. Then go to World 2, Stage 1, pause the game, and
retire. When it asks if you want to continue, say "No." At the title
screen, start a new game, and go to World 6, Stage 3. When the Stage
starts, pause the game, retire, and choose not to continue. When the
title screen comes up again, the word "World 6" will be to the right of
"Game Start." Highlight "Game Start," and press Left. A new word
"Hyper" appears. If you play the game on this mode, you get the Extra
stages and you have the triple jump.
At the title screen, put the cursor next to "Game Start" and press Up,
Up, Down, Down, X, X, Left, Right, Left, Right, X, Triangle, X,
Triangle. The box at the bottom of the screen turns red. Now when you
start a game, press right and you can go to any world in the game.