Dragon Warrior III/Sky World

After you defeated Zoma in his Castle and escaped to the Cave north of Ludatorm. Exit the Cave and you will hear a rumble which tell you the hole to the World above has closed. You can only Return to the 5 Towns in Alefgard. That is not all. With the Death of Zoma the light has returned to the dark Alefgard. Return to Ludatorm and get hailed as a hero there. Talk with the King and he will tell you what you already knew: The Hole to the World above has closed and the light has returned thanks to Zoma's Death, but then he give you the Title. Which you will need to the Heaven and thus the Bonus Dungeon. The Credits will then roll over the screen until the text "To be continued in Dragon Quest I-II" appears, then reset the game and try to reload your savestate. You will see the hero title "Loto" appear behind your name.

That just mean you now can enter the Bonus Dungeon and grab more Treasures, but also meet new and stronger Monsters. The most important point of the Bonus Dungeon is the Wish filled by God Dragon/Divinegon once you defeat him.

Wandering
Return to Dragon Queen Castle to the place where you found the Small Medal. Go in the Sunlight and all around you will get distorted and you will appear on a small Heaven Isle with a Cave which is the Bonus Dungeon.

In Bonus Dungeon new monsters never seen before will appears along with some known monsters. ,, , , , , , are new monsters. is the only one who drop a Mystic Nut, so if you want to hoard Seeds and maximize your stats, then you are better off going for Wisdom Seeds instead. is also a common Monster in this dungeon. Enter it you will probably get the feeling you know this dungeon and you're right. This part is from Necrogond Cave and most of the Bonus Dungeon is taken from other places. You will recognize alot as you walk through the dungeon.

Anyway go north then west for a chest which contain a Mimic. You may as well ignore it and go east until a path going north appear. There is another Chest with a Strength Seed inside. Grab it and go east, north and then west all the way. The Chest at the Deadend contain a Staff of Reflection. Now go east to the stairs to the next level. Just like in the Necrogond Cave you need to find the right way to the next stairs below and there is no Treasure on this level. The next level is from Orochi Cave. Just like in the Orochi Cave there is also a treasure chest at the same place. It hold a unique item of which you thought have lost it in the volcan. It's the Gaia Sword! A level deeper leads you to a pyramid of which 2 different stairs exist. Take the right stairs to a room where a priest live. Under the cross is a Mystic Nut hidden. Go back up and go to the treasure chest southwest. It has a Small Medal. Now take the left stairs downstairs to the next level. This one have a HP/MP recover spot just like the Dream Cave near Noaniels. This is a ideal spot to train yourself to higher level and the endboss is quite tough. Go west then north ignoring the west path. At the end go get Sorrow Shield and Small Medal from both chest. Now go back and take the west path. In the next level search with the help of Seek Out for 2 Treasures in this small area. You will find Strength Seed and Life Nut near the statues. In the Samanosa Jail there is also 2 treasures, one in the pot and the other is right of the corpse. It's a Small Medal and a Hero Guide. writing text