Power Up mode: Press Up, Right, Left, Down,
Up, Right, Left, Down at the title
screen. Rotate the Joystick clockwise in two circles to
give Bub and Bob permanent shoes, blue gum, and yellow gum.
Super mode: Press Left, Start, Fire, Jump,
Up, Down, Start, Right at the title
screen to unlock another set of levels.
Original mode: Press Start, Left, Fire, Jump,
Fire, Jump, Fire, Jump. Secret rooms
will always appear in levels 7 and 37.
Alternate endings: Complete the indicated task to unlock the corresponding
ending.
Bad ending 1: In Normal mode, defeat the Boss of level 70 without
getting the seven potions.
Bad ending 2: In Normal mode, get the seven potions, then reach
level 80 and defeat the final Boss.
Bad ending 3: In Super mode, defeat the Boss of level 70 without
getting the seven potions.
Good ending: In Super mode, get the seven potions, then reach
level 80 and defeat the real final Boss.
