Look, let’s be real. If you’re at the point where you’re hunting for the Soul Guitar in Blox Fruits, you’ve already put in the hours. You’ve ground your way to the Third Sea. You’ve probably seen some high-level player spamming that massive notes-and-skulls move and thought, "Yeah, I need that in my hotbar." It is, hands down, the best support weapon in the game for PvP and Raids. But the game doesn’t exactly hold your hand through the process. It's cryptic. It's grindy. Honestly, it’s a bit of a headache if you don’t know the specific order of operations.
The Soul Guitar isn't just a weapon; it's a Mythical Gun that basically functions like a life-leeching crowd control machine. You’re going to need a Full Moon, a whole lot of bones, and a bit of patience for some weird puzzles.
The Absolute Bare Minimum Requirements
Before you even think about heading to the Haunted Castle, check your stats. You have to be Level 2300 or higher. If you’re Level 2299, the gravestone is just going to ignore you. Don't waste your time. You also need to make sure the server is on a Full Moon cycle. You can check this by looking at the moon in-game; it’s gotta be that big, bright, perfectly round circle. If it’s even a sliver off, the quest won’t trigger.
Materials matter too. You’ll need 500 Bones, which you can farm from the skeletons right there at the Haunted Castle. You also need 250 Ectoplasm (usually found in the Second Sea's Cursed Ship, so hopefully you saved some), 1 Dark Fragment (dropped by the Blackbeard Raid Boss), and 5,000 Fragments. It’s an expensive craft. Total investment is high, but the payoff is a weapon that can heal you while stunning your enemies.
Starting the Quest at the Haunted Castle
Once the Full Moon rises and the chat says "The light of the full moon shines through the clouds," head over to the graveyard on the left side of the Haunted Castle in the Third Sea. Look for a gravestone with a prayer option. Click it.
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If you meet the level requirement and it's a Full Moon, the grave will ask you if you'd like to pray. Say yes. This kicks off a series of trials. If the game says "Nothing happened," you either aren't the right level or you missed the Full Moon window. It’s a tight schedule.
Trial One: The Living Dead
First thing you’ve got to do is head over to the other side of the island where the Living Zombies are hanging out. You need to kill all of them at the exact same time. Well, basically the same time.
The trick is to aggro them all, gather them into a tight cluster, and hit them with a massive AOE (Area of Effect) move. If one survives or respawns too late, it won't count. You’ll know you got it right because your screen will flash or a message will pop up. Most players use Buddha or Magma for this because the hitboxes are huge. It’s simple, but frustrating if one stray zombie wanders off.
Trial Two: The Signpost Puzzle
Head back to the graveyard area. You’ll notice a bunch of signposts. This part feels like a middle-school math problem. You need to click the signs on the side that has more graves.
Look at a row of graves. Count how many are on the left side and how many are on the right side. Click the signpost on the side with the higher count. Do this for every row. If a row has an equal number of graves on both sides, there’s usually a specific logic—most players find that the "winning" side is the one that leads toward the back of the graveyard. Once you finish, the signposts will disappear or a sound will play.
The Haunted Castle Interior Puzzles
Now, things get weird. Head inside the actual castle. You’re looking for a ghost NPC named El Admin. He’s hanging out in a hallway. He’ll talk to you, but then he disappears. Don’t panic; that’s supposed to happen.
The Trophy Arrangement
Go to the basement of the castle. You’ll see a series of trophies on the wall. Some are horizontal, some are vertical. You might want to take a screenshot or have a friend call out the positions. You need to go to the floor below that and find the panel of pipes.
You have to change the orientation of the pipes to match the trophies you just saw. If a trophy was vertical, make the pipe vertical. If a trophy was missing from a spot, leave that spot blank or "empty" on the pipe grid. It’s a classic memory game. If you mess up, just go back up and double-check the trophy room.
The Color Pattern
This is the final hurdle before the crafting. In that same basement area, you’ll see floor tiles that you can change the color of. You need to match the colors to the pipes on the ceiling. Look up.
- Blue pipes mean Blue tiles.
- Red pipes mean Red tiles.
- Green pipes mean Green tiles.
It’s straightforward, but the lighting in the Haunted Castle is pretty gloomy, so keep your brightness up. Once the colors match the ceiling, a secret crafting machine (the Weird Machine) will become accessible.
Crafting the Soul Guitar
Approach the machine. It’s going to ask for those materials I mentioned earlier: the 500 Bones, 250 Ectoplasm, 1 Dark Fragment, and 5,000 Fragments.
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When you hand them over, you get the Soul Guitar. Congratulations. You now own a weapon that has one of the most broken "Z" moves in the game. Soul Shaker fires a massive note that explodes, and El Diablo summons a literal underworld pit that deals massive damage and heals you for a percentage of the damage dealt.
Why Most Players Fail This
Honestly? It's usually the Full Moon. People get impatient. They start the quest at the end of the night cycle, and by the time they get to the zombie trial, the sun comes up. If the sun rises, the quest resets. You have to do the whole thing in one night.
Also, the Dark Fragment. Don't forget that you have to kill Blackbeard (Sea Beast) to get it. It’s not a guaranteed drop for everyone, but if you deal enough damage, you’ll get it. Make sure you have that in your inventory before the Full Moon starts, or you'll be sitting there with a completed puzzle and no way to finish the craft.
Next Steps for Your Build
- Upgrade it: Take the Soul Guitar to the Blacksmith. You'll need 10 Magma Ore, 15 Dragon Scales, and 1 Spirit Island. It increases the damage by 10%, which is significant for PvP.
- Mastery Grind: You need 300 Mastery to unlock El Diablo. The fastest way is to server hop the Cake Prince or Bore Ghoul bosses.
- Stat Alignment: Since it’s a Gun, it scales with your Gun stat. However, many players use it purely for the "Z" stun and "X" heal, keeping their points in Sword or Fruit. Decide if you’re a main Gun user or if this is just your utility tool.