Make the Ultima Weapon in Kingdom Hearts 1

The Ultima Weapon is the strongest Keyblade available in Kingdom Hearts 1. It can only be synthesized after you've synthesized all other possible items in the Moogle shop. Want the Ultima Weapon? Start with Step 1.


Gathering All Necessary Materials

  1. Make a list of everything you need. If you write down everything you need to make the Ultima Weapon, you will avoid having to go back and forth unnecessarily. Here's what you'll need:
    • Power Gems, 5 pieces
    • Lucid Gems, 5 pieces
    • Thunder Gems, 5 pieces
    • Mystery Goo, 3 pieces
    • Gale, 3 pieces
  2. Gather 5 Power Gems. Power Gems drop from almost every heartless in Neverland, so they are very easy to get. Here's what to do:
    • Go to Neverland (Peter Pan's world).
    • Warp to the cabin and exit the only door, which leads to the deck.
    • Kill all the heartless on the deck (Pirates, Air Pirates, and Battleships).
    • Once you have 5 pieces of Power Gems, head back to the cabin and exit Neverland.
  3. Gather 5 Lucid Gems. Lucid Gems are a bit harder to get and may require a bit of patience. Here's how to get them:
    • Warp to Halloween Town (Jack Skellington's world) and land at Guillotine Gate.
    • Exit the only door in this area, which will lead you to Guillotine Square.
    • Head northwest until you see a small alley with a staircase. Enter the gate at the top of the staircase, which will take you to the graveyard.
    • At the graveyard a number of enemies will spawn. Target Wight Knights (mummy-looking heartless) and Gargoyles (flying humanoid bird heartless). You can go back to Guillotine Gate, then reenter the graveyard to make these heartless spawn again.
    • Once you have 5 pieces of Lucid Gems, go back to Guillotine Gate and exit Halloween Town.
  4. Gather 5 Thunder Gems. Gathering Thunder Gems can also be tricky because few heartless drop them. So:
    • Warp to Atlantica (Little Mermaid's world) and land at Triton's throne.
    • Head south to the only exit, which will lead you to Triton's palace.
    • Head north, and you will see Screwdivers (heartless that carry tridents or three-pronged spears) and an Aquatank (heartless that look like large Anglerfish). Kill them to get Thunder Gems.
    • Head to the Undersea Gorge, which is directly north from where you came. More Screwdivers and Aquatanks appear in this area. Kill them to get more Thunder Gems.
    • Once you have 5 pieces of Thunder Gems, head back to Triton's throne and exit Atlantica.
  5. Collect 3 Mystery Goo. To get Mystery Goo, you must defeat White Mushrooms, Black Fungi, or Rare Truffles. White Mushrooms are the best option because Black Fungi drop Mystery Goo rarely, and Rare Truffles require more skill and patience to beat.
    • Warp to Wonderland and land at the Queen's castle.
    • Head north to the center of the room, then head east. The door there will lead you to Lotus Forest.
    • White Mushrooms spawn here, about 3 or 4 at a time. To beat them, you must follow their game of "charades" and guess which spell to cast. For White Mushrooms that shiver, use fire spells; for White Mushrooms that fan themselves, use blizzard spells. If a light appears above the White Mushroom, use thunder spells. If the White Mushroom is on the ground, use cure spells. If the White Mushroom stops moving, use stop spells. If it floats in the air, use gravity spells. If it spins around, use aero spells.
    • After you guess the correct spell 3 times in a row, the Mushroom will reward you with items, including Mystery Goo.
    • Collect 3 Mystery Goo, then go back to the Queen's castle and leave Wonderland.
  6. Gather 3 pieces of Gale. The heartless that drop Gale are very powerful, so be prepared:
    • Warp to the End of the World (the last world you unlock) and land at the Final Rest. This room is the last one before the final boss battle.
    • Head back to the previous room rather than going through the last door.
    • This room has 2 types of heartless: Invisibles, which are black, and Angel Stars, which have wings. Kill them and collect pieces of Gale.
    • Head back to the Final Rest and re-enter the room, making heartless spawn again. Kill them and collect pieces of Gale. Repeat as necessary.
    • Once you've collected 3 pieces of Gale, head back to the Final Rest and leave the End of the World.

Synthesizing the Ultima Weapon

  1. Warp to Traverse Town (where you first met Leon and the rest of the Final Fantasy crew) and land at the accessory shop.
  2. Inside the shop, climb a ladder and enter the synthesis shop, better known as the Moogle shop.
  3. Talk to the Moogle in front of the forge, and select the "Ultima Weapon," which should be last on the list.
  4. Confirm the synthesis, and the Moogle will create your Keyblade. Synthesis has a 100% success rate, so enjoy your new Ultima Weapon!


  • To get a better drop rate on the materials you need, remember to equip Sora, Donald, and Goofy with the lucky strike ability.
  • When you are casting the correct spells on the White Mushrooms 3 times in a row, you will be rewarded with a rare arts item. When you collect all 7, you can take them to Merlin at Traverse Town, who will give you a Dream Shield for Goofy.
  • When you are trying to collect Gale, bring some potions so you don't accidentally get killed. Avoid Invisible and Angel Star attacks with dodge rolls and wait for openings.