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To get the Skull Guitar in Blox Fruits, reach level 2300, pray at the Gravestone in Haunted Castle at night during a Full Moon, and complete its puzzle. Then craft the Mythical gun at the Weird Machine using 500 Bones, 250 Ectoplasm, 1 Dark Fragment, and 5,000 Fragments. The puzzle unlocks crafting; it does not give you the weapon automatically.
Before you start: level and Full Moon
You must be level 2300 or higher to start the puzzle. Go to the Gravestone in Haunted Castle and pray at night while a Full Moon is active. The community guide identifies the chat message “The light of a full moon peaks through the clouds” as the practical sign that a Full Moon is present. It also says lit candles around the Gravestone indicate eligibility.
Full Moons are reported to recur approximately every 180 minutes on an established server and every 55 minutes in a new server. Treat those intervals as approximate; check the in-game message rather than relying on a timer. See the community puzzle guide for the reported conditions and stages.
Complete the Haunted Castle puzzle
1. Defeat six Living Zombies with one attack
Kill six Living Zombies at the same time using the same attack. Draw them close together, deal roughly even damage, then finish them with one attack. Avoid knockback that could scatter them before the finishing hit. A Buddha build is one suggested way to group them, but the key requirement is that all six are defeated together by the same attack.
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2. Choose the graveyard sign
Return to the graveyard and inspect the two rows of signs. Count the actual graves on each side, including cross-shaped graves; do not count patches of soil. Click the sign pointing toward the row with more graves. A correct selection is reported to turn white. Use the layout in your own server rather than copying a screenshot, because the arrangement can vary.
3. Speak to the Ghost
Enter the main castle and go to the room on the right side of the stairs. Talk to the Ghost NPC to advance.
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4. Recreate the trophy arrangement
In the garden between the castle and the Soul Reaper room, note or screenshot the trophy arrangement while facing the castle. Then go to the electrical room beneath Haunted Castle and reproduce the directions using its circuits:
- Trees correspond to blank spaces.
- Trophies facing left to right correspond to horizontal lines.
- Trophies facing back and forth correspond to vertical lines.
The trophy layout is randomized, so copy the arrangement in your current server rather than following a fixed solution from another player.
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5. Match the colored floor tiles
Click each floor tile until its color matches the colored pipe on the wall or roof. If no colored pipe corresponds to a tile, leave that tile unchanged. The guide reports that a successful solution displays “Congratulations.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Craft the Skull Guitar
After finishing the puzzle, use the Weird Machine at Haunted Castle and supply the required materials:
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| Material | Amount |
|---|---|
| Bones | 500 |
| Ectoplasm | 250 |
| Dark Fragment | 1 |
| Fragments | 5,000 |
The item reference lists Skull Guitar as a Mythical gun obtained in the Third Sea through this crafting route. It was formerly called Soul Guitar; the reference’s change history says the model was revamped and renamed Skull Guitar in Update 24. See the Skull Guitar item reference.
If the puzzle does not advance
Check that you completed each stage in order and used the current server’s grave and trophy layouts. The guide reports that puzzle progress may persist after leaving or after the Full Moon ends, but also notes possible desynchronization, so persistence is not guaranteed. If the game appears stuck, recheck the active stage and its requirements in the live game; community guides are not official developer documentation and an update or server issue may affect behavior.
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