Milon's Secret Castle/Secrets and codes

Continue your game (Famicom / NES)

In order to continue your game, you must obtain the first crystal from the boss on the first floor. Once you possess this crystal, you can continue your game after you lose all of your health by returning to the title screen, holding and press

Passwords (Game Boy)

Password	Effect
MMMMM MMMM MMMMM	Start with 12 health, crown, water, bottle, sword, blimp, lantern, potion, jacket, jumping shoes, and three crystal balls.
KTTTT TQRF TPMTT	Start with 15 health, every item except for the Paint, and seven crystal balls.
SNMNR TTRH BBBBL	Start with 16 health, every item, and one crystal ball.
TTPTR TSRH CDBBN	Start with 16 health, every item, and seven crystal balls.