Big Mountain 2000 Codes -

Level select:
Hold and quickly press , , at the level selection screen to unlock all levels.

Mirror levels:
Successfully complete levels 1 through 4. A message will appear after the credits will confirm correct trick entry. Press when selecting a level in time attack, two player, and championship modes to play on the mirrored version.

Bonus characters:
Successfully complete the mirror levels 1 through 4 with Skier and Boarder. A message confirming that the three bonus characters (robot, bear, disco dancer) have been unlocked will appear after the credits.