There are a few glitches that were fixed when the game was localized overseas, mostly involving pressing opposite directions simultaneously.
•When using Jet Kirby and doing a semi-charged or fully-charged boost in midair, pressing up and down while flying sends Kirby flying diagonally. If Kirby bumps into a wall after a semi-charged boost while holding up and down, Kirby will bounce upwards very fast.
•When using Fire Kirby while doing a running boost in midair, pressing up and down will cause Kirby to shoot down very fast, passing through floors.
•When using Plasma Kirby while holding left and right and pressing up will charge Kirby's plasma beam to the maximum immediately, allowing you to fire fully-charged shots right away.
•When using Yo-Yo Kirby, pressing up, down and Y in midair will cause Kirby to disappear from the screen. If this is done with a helper, the game will act as if the helper doesn't exist.
•Pressing up and down on a ladder causes the game to crash, or could possibly send you to the credits of Milky Way Wishes.