These cheats are done at the title screen when the words  "Press  Start
Button" are flashing.

Stage Select:

 Press Right, Up, Left, Up, Right, Up, Down, Up, Left, Up, Left, Up on
 the control pad.

Go to the End of the Game:

 Press  Right, Up, Left, Up, Down, Up,  Right, Left, Up,  Right, Left,
 Down on the control pad.

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 To find the hidden  bonus  games, pick  "Bosses  Galore"  at the games
 lineup.  Then, at the screen with "Bosses  Galore" and the "Start" and
 "Options" boxes, press Up, Up,  Right,  Right, Down, Down, Left, Left,
 X, Y, X.  The word "Minigame"  should appear.  Press Start and you can
 pick from any of the seven mini games.

 These cheats are done at the title screen when the words  "Press Start
 Button" are flashing.  Stage Select: Press Right, Up, Left, Up, Right,
 Up, Down, Up, Left, Up, Left, Up on the control pad.  Go to the End of
 the Game: Press Right, Up, Left, Up, Down, Up, Right, Left, Up, Right,
 Left, Down on the control pad.