Sega Master System / Mark III / Game Gear
WE5T 0NE 0000 000 as your password to start as Hu-Man with all items, ninety-nine stones, and almost one million gold pieces.
Equip the Magical Saber, Knight Shield, Goblin Mail, and Fire Ball. Every time you swing your sword, you'll create magical blocks.
MODE FOR 0000 000
PLAY THE 0NGA KUN
There is a house at the right of the first village with two doors. Put your character at the empty space between the doors and find the secret door.
Equip the Kashmir Sword. Now, jump and press while in the air.
See the main page for Wonder Boy: The Dragon's Trap / Monster World II - Dragon no Wana (モンスターワールドＩＩ－ドラゴンの罠)