Advance mode
Successfully complete the game to unlock advance mode, which is a more advanced difficulty setting.
Name bonuses
Enter "Max" as a name for a Warrior to get a +10 bonus in strength.
Enter "Hans" as a name for an Archer to get a +10 bonus in vitality.
Enter "Anri" as a name for a Mage to get a +10 bonus in intelligence.
Enter "Bleu" as a name for a DragonNewt to get a +10 bonus in dexterity.
Hidden dungeon
Play the game in advanced mode. Hold [L] + [R] when selecting the Dark Castle to play in a hidden dungeon.