Milon's Secret Castle is an action-puzzler from Hudson Soft. It stars a boy named Milon, who must wend his way through a labyrinthine castle, attacking enemies with bubbles. According to the manual, he seeks to rescue Queen Eliza, who has been imprisoned inside the castle by a warlord. The castle is navigated by doors on the outside. Behind each door is a small stage, shop, or boss fight. Stages are standard platforming fare, with many blocks. Some of these blocks disappear when shot with a bubble. A few leave behind money, which can be collected only once. However, one stage on the third floor regenerates its hidden money, enabling you to get as much as you need later in the game. Enemies continuously spawn in stages. They can be destroyed by bubbles, often leaving behind a heart to refill a point of Milon's health meter. Occasionally they drop an umbrella, which increases the firing rate of his bubbles. You must be careful, though: Milon can be hit repeatedly by the same enem