Super Monkey Ball Codes -

Master code:
Press Down(2), Up(2), Left, Right, Left, Right, B, A when "Press Start" appears at the title screen. All bonuses and practice levels will be unlocked.

Blocky graphics:
Press Left(2), Right(2), Down(2), A when "Press Start" appears at the title screen. The game title will change to confirm correct code entry. The game's frame rate will improve, at the expense of graphics quality.

Nice try message:
Press Up(2), Down(2), Left, Right, Left, Right, B, A when "Press Start" appears at the title screen.

Hint: Super speed:
Hold Up + A during game play in any level and you will go much faster.