Guide
Glossary
MU acronyms and slang explained in plain words, for those just starting out.
How to use this glossary
MU has a lot of acronyms and slang. If someone said a word you didn't understand in chat or voice, look it up here. The terms are split by topic.
Getting started · Classes · Events · Items
Classes and abbreviations
Each class has a short nickname. Players almost always use the abbreviation, not the full name.
| Term | What it is |
|---|---|
| DK / BK | Dark Knight and its evolution, the Blade Knight. The melee warrior: strong, tough and sword in hand. |
| DW / SM | Dark Wizard and its evolution, the Soul Master. The mage who attacks from a distance with spells and has low defense. |
| Elf / ME | Fairy Elf and its evolution, the Muse Elf. The archer who supports the group with buffs and also attacks from range. |
| MG | Magic Gladiator. A hybrid class that uses sword and magic at the same time. |
| DL | Dark Lord. The commanding class: wields a scepter, hits hard and summons a pet mount. |
| Class | Your character's type. It defines the play style, the attributes and the skills. |
| Evolution | A class phase change, done by completing the class quests. The evolution makes your character stronger. |
Events
Events are activities that happen at set times. Participants can earn rewards.
| Term | What it is |
|---|---|
| BC | Blood Castle. An event where you guard a gate, destroy the barrier and carry an item to the end before time runs out. The group works together. |
| DS | Devil Square. A monster arena where everyone fights for points. At the end, whoever scored the most gets the bigger reward. |
| CC | Chaos Castle. A player-versus-player battle in an arena that keeps shrinking. Last one standing wins. |
| IT | Illusion Temple. A match between two teams where the goal is to grab the relic and carry it to the delivery point. |
| CS | Castle Siege, the battle for the castle. It's the biggest war on the server: guilds fight to take over the castle. On MU Unit, it can also mean CS Character. |
| Crywolf | Event where everyone defends the map against a monster invasion. |
| Loren Deep | Defense event on the Valley of Loren map. The team has to protect the spot against waves of monsters. |
| Event Square | Plaza where Blood Castle, Devil Square, Chaos Castle and Illusion Temple start. It is shared by all rooms. Go there with /move EventSquare. |
| Boss | A strong monster that appears at set times and maps and drops better rewards. The BOSS tab and the event schedule (/evento) show where it is and when it returns. |
| Sign of Lord | Item the guild hands in at the Castle Siege. Only the Alliance Master, Guild Masters and Staff can hand it in. |
| Switch Crown | Castle Siege platform that whoever holds it controls during the war. The holder receives full crown time and the party near them receives half. |
| Invasion | Strong monsters that show up unannounced on several maps. You can hunt them down, solo or in a group, to earn a reward. |
| Event time | Each event has its fixed schedule. Check the agenda in the events guide so you don't miss it. |
Items
Items come in several quality levels. Knowing how to read an item's description helps you avoid trading gold for bronze.
| Term | What it is |
|---|---|
| Exc / Excellent | A rare item with a blue name and extra bonuses. It is much stronger than a regular item. |
| Anc / Set / Ancient | A special set piece. If you gather the pieces of the same set, you get extra bonuses. |
| +13 | An item that has been refined up to +13. The number after the + is the refine level. |
| Refining / Upgrade | An item upgrade done with jewels. The higher the refine level, the stronger the item. |
| Additional / Option | An extra bonus the item can have, like more defense, more damage or more life. It usually shows up in red in the description. |
| Luck | An option that increases the success chance when refining and gives a chance of a critical hit on weapons. |
| Skill | A skill that comes with the weapon or shield. Without it, the item doesn't unlock the attack or spell. |
| Full | A character with all the pieces of the set, none missing. Also used for a full set. |
| Durability | How much the item can take before it breaks. Mounts and guard pets lose durability as they take damage (the Dark Raven, much more slowly). A broken Wizard Ring can be dropped on the ground and sold. |
| Drop | An item dropped on the ground by a monster or an event. |
Jewels
Jewels are the currency of exchange and the raw material of MU. Almost everything in the game goes through them, from refining to creating items.
| Term | What it is |
|---|---|
| Bless | Jewel of Bless. Used to refine items at the early levels and in several recipes. |
| Soul | Jewel of Soul. Used to refine items, but it can fail. It's the middle-tier jewel. |
| Chaos | Jewel of Chaos. Used in item combinations and special creations. Each recipe asks for its own amount. |
| Life | Jewel of Life. Used to add an additional option bonus to items. |
| Creation | Jewel of Creation. Used in recipes that create special items. |
| Guardian | Jewel of Guardian. Used to reinforce more advanced items. |
| Harmony | Jewel of Harmony. Gives the item an extra attribute bonus that isn't of the regular kind. |
Each jewel has its own role, and recipes vary by item. Before spending a jewel, check what it's for in the items guide.
Everyday slang
These words show up all the time in chat and voice. Knowing what each one means makes talking to other players easier.
| Term | What it is |
|---|---|
| Up | Leveling up. "I'm leveling" means the player is killing monsters to gain experience. |
| Spot | A place on the map where you hunt. A good spot has lots of monsters together and little competition. |
| PT / Party | A group of players who hunt together. Party members share experience and can help each other. |
| KS | Kill steal: taking a monster another player was already hitting. |
| PK | Player Killer. A player who kills other players. Whoever does this gets the murderer color and suffers penalties: a murderer PK cannot use /move or the talisman. PK only goes down by hunting monsters, with 30 minutes of hunting for each PK level. The Dark Lord can pull a PK with the summon on any map. |
| Death | Dying in MU Unit takes no experience or zen. |
| Reset | Going back to the starting level after reaching the required level, to become stronger in the long run. See the reset guide for MU Unit's rules. |
| Farm | Repeating the same task many times to gather resources, jewels or experience. |
| Buff | A support spell that gives a temporary bonus, like extra defense or extra damage. The Elf is famous for it. |
| Combo | A sequence of attacks or spells chained in a short time to deal more damage. |
| Kit | A ready-made set of items or potions that the character uses or receives. It helps you get started faster. |
| Vault | Space where you keep items, zen and jewels for later. It lives in your account vault. The Free account uses vaults 1 and 2 and Premium up to 20. |
| Trade Warehouse | A separate vault that receives what you buy in the Shop and the Market. Withdraw only, no storing. It does not take part in vault trading. |
| eZen | Item that holds 1 billion zen. You make it with /ezen (10% fee), store it, trade it or sell it to the NPC for the same value. |
| Post | Chat channel that reaches all rooms, with the $ symbol. Costs 100,000,000 zen per message. |
| Auto UP | Premium feature that hunts for you: walks to the monster, attacks and picks up the marked items. F9 opens the window and Home turns it on and off. |
| Zen | In-game money. |
| Mob | Any monster in the game. |
| Lag | Delay or freezing in the connection. When the game is slow to respond, that's lag. |
| Noob / Newbie | A new player. It isn't an insult by itself, but depending on the tone it can be. |
MU Unit terms
Some terms are specific to MU Unit. If you are coming from another server, it is worth reading this part carefully.
| Term | What it is |
|---|---|
| CS Character | Character made for the Castle Siege. It only attacks in the war and does not enter regular events (BC, DS, CC and IT). See its own page to learn how to create and use it. |
| Room | Each of the copies of the server the game runs on. Players choose which one to join. The Castle Siege has a room of its own, which does not appear in the regular list. Room 1 has no PK or PvP and is for those with up to 50 resets. |
| Alliance Master (AM) | The guild owner. Only they appoint and remove Guild Masters and Staff, declare guild war, register the guild for the Castle Siege and register the crown. Alliances no longer exist: the game has only guilds. |
| Guild Master (GM) | Rank within the guild, appointed by the Alliance Master (up to 4 per guild). Recruits, kicks and grants the Vice GM and Battle Master ranks. Each GM adds 20 member slots to the guild. |
| Staff | Guild rank that recruits and kicks members without a rank. Only the Alliance Master grants and removes it. |
| Vice GM / BM | Vice GM and Battle Master (BM) are guild ranks that apply in the Castle Siege. The BM uses Stun, Cancel Stun and Swell Mana; the Vice GM, together with the AM and GMs, uses Invisibility. |
| Credits | Your account balance on the site. You spend credits on MU Unit services. Check your account to see how it works. |
| Premium | An account with extra perks over the free account. The rules and benefits are described on the site. |
| Free | Free account, without the Premium perk package. |
| Market | Area where players trade with each other, on the site, in the launcher and in the game (X key). |
| Shop | Area of the site where you buy items with credits. In the game, it opens with the S key. The purchase goes to the Trade Vault. |
| Account | Your registration on the site. Your characters, credits and security settings come from it. |
| Launcher | Program that opens the game, checks that the files are up to date and updates whatever is missing before you enter. The game should only be opened through it. |
Can't find the term?
More from the guide
All topics · Getting started · Account and security · Classes and evolution · Reset and points · Progression by phase · CS Character · Commands and keys · Items, jewels and Chaos Machine · PvP, PK and guild · Castle Siege · Economy, market and credits · Dark Elf · What's different here