Slide Puzzle: This code is really just for kicks. Once you get the airship board it, hold down the A button, and push B 55 times. You'll then be able to play one of those annoying and seemingly impossible slide puzzle games. Enjoy.

World Map: This isn't exactly a code, but if you hold B down and push select on the overworld you'll be able to see the entire map. This is very helpful your first time through the game. Also, as a side note, the magic brooms message read backward reads "B select a magic spell?".

Location of Level 8 Spells: In Lefein, the final town, in the northeast corner there should be a hidden tunnel. After going through it you'll come to a magic shop that sells the final spells of the black and white groups: Nuke and Lif2.