Wonder Boy in Monster World

Here is a list of the extra heart locations:

• In the first monster cave to the right of Alsedo.
• In the second monster cave: It is in a side passage, requires flipping a switch, and also requires you to have the little boy Hotta with you.
• In the ocean left of Alsedo; you need the trident. It is toward the right side.
• In the cave between Alsedo and Puripil. A secret door is in the second puddle of water from the right. Requires the Trident. The door doesn’t lead to the chest directly, you have to follow a path to get to it.
• In Poseidon’s cave. Look around under water toward the beginning.
• In the ice cave, toward the end, on the left side.
• In the small path to the left of the falling boulder in the cave to the right of Lilipad. Requires you to become a Pygmy.
• In the pyramid, there is a small opening to the left of the spiked ceiling room. Go through it as a pygmy, go down the ladder, and then walk left through the wall that is left of the door I went through on the video for Rare Find.
• In the volcano, it is under the lava at the very left of a path. The path is the first one with a snake coming out of it.
• In the clouds above Puripil (before the 5th monster cave).
• In the 5th monster cave, there is a secret door on the bottom path of the trolley track which will transform you into a pygmy. There is a path to the left of the legendary armour which you must go through once you are a pygmy. The heart is in there.

As you go through the story, tick off the ones you have collected. Then go back through to get the others before you face the final boss.