MU Online Socket Items Guide

Socket items let you build your own custom gear. You slot in seed spheres — small items that add a bonus — to power up your weapons and armor. Match the right ones and you unlock an extra set bonus on top. The socket system arrived in Season 6 (the sixth big update to the game). It sits next to excellent and ancient gear as one of the best ways to gear up for the endgame, meaning the high-level part of the game once you are strong. This guide explains sockets, seeds, the five elements, and how to put it all together.

What socket items are

A socket item is a piece of gear with one to five empty socket slots. Think of a slot as an empty hole you can fill.

Normal excellent gear comes with bonuses already locked in. Socket gear is different. You fill the slots yourself with seed spheres, and each one adds a bonus you pick.

That makes socket gear super flexible. You decide if a piece is built for attack, defense, healing, or speed. A weapon or armor with five sockets and the right seeds is some of the strongest gear in the whole game.

The five elements

Seed spheres come in five elements. Each element covers a different group of bonuses, so you can pick the one that fits your style:

Every seed also has a level, usually 1 to 5. The level decides how strong the bonus is, so a higher-level seed gives bigger numbers. The exact numbers vary by server, meaning each server can set its own values.

Creating seed spheres

You can't drop a raw seed straight into a socket. First you have to turn it into a seed sphere. You do this at the Seed Master (named Elpis) and the Seed Researcher. Both are NPCs, which just means non-player characters you talk to in town. Here are the steps:

1. Get a seed: pull a seed out of a socket item, or grab one from drops or mining. How you get them depends on the server.
2. Get a sphere: spheres come in levels and act as the shell that holds the seed.
3. Combine them: put the seed into a sphere at the Seed NPC. That gives you a seed sphere you can slot into a socket.

Making one uses up materials, and it can fail, so bring spares. It works a lot like crafting wings.

Socketing and removing seeds

Once you have a seed sphere, you drop it into an open socket on your item. Want to change a socket later? You usually can. Removing the old seed often destroys it or costs you something, and then you slot a new one in.

Plan your sockets around what you do in the game. A PvP character (one built for fighting other players) loads up on defense and bonuses that keep you alive. A farmer (someone grinding monsters for items and EXP, which is short for experience points) leans into attack and healing instead.

Socket bonus options

The best part of the socket system is the socket bonus option. When you fill several sockets with seeds of the same element (or a special mix your server picks), you unlock an extra bonus on top of what each seed already gives. It works like a set bonus, the reward you get for matching items together.

This extra bonus is what makes a fully socketed item with one matched element so strong. The lesson is simple: pick a theme and stick with it instead of mixing elements at random.

Where to get socket gear and seeds

• Selupan (in Raklion): the go-to spot for socket items. Selupan is a big boss, a powerful monster, that drops socket gear.
• Drops & bosses: tougher maps and invasions (events where monsters flood a map) drop socket items and seeds.
• Events: some events hand out socket materials. See the events guide.
• Trade: buy the exact seeds and socket pieces you want using jewels, the main trade currency in MU. Read more in the jewel economy guide.