Crescent Moon Island
Crescent Moon Island is a moon-shaped island located at E-1 containing an Overworld Check, a submarine, sunken treasure, and Blue Chuchus.
Overworld Checks
Crescent Island contains a Sphere 0 check in the form of a chest placed on the island guarded by two Blue Chuchus that contains a Treasure Chart in the vanilla game.
Submarine
The submarine is located north of the island and contains waves Miniblins. The player is only required to destroy the first Miniblin, and a ladder will be accessible after a set amount of time. The player may also set fire to the fourth skull in the submarine with Fire Arrows which will also make the ladder accessible. The chest contains a Treasure Chart in the vanilla game.
Sunken Treasure
This treasure can be located by opening Treasure Chart 11 when charts are not randomized. The chest contains a Piece of Heart in the vanilla game.