Last updated: July 21, 2026

On this page: Creating a Guild · Ranks · Alliances & Hostility · Guild War · Road to the Castle · FAQ

MU Online Guild System – Creation, Alliances & War

Nothing in MU's endgame is solo: Castle Siege, boss camps and the server's whole political layer run through guilds. Here is the system end to end — from paying the creation fee to ruling Loren Castle.

Creating a Guild

Requirement	Classic value
Guild master level	100+
Fee	Zen (server-configured; trivial on most private servers)
Where	Guild Master NPC (Devias / Valley of Loren)
Setup	Unique name + 8×8 pixel crest displayed over every member

Ranks and Management

The Guild Master owns invites, kicks, alliance and war declarations; Assistants/Battle Masters (by version) carry delegated rights for day-to-day recruiting; everyone else is a member with the crest and guild chat. Member cap is 80 classic, tunable per server. A practical note from every long-lived guild: promote assistants in different time zones — recruiting windows, not skill, grow rosters.

Alliances & Hostility

Relation	Effect
Alliance	2–3 guilds under one banner: shared alliance chat, one siege side, no friendly-fire PvP flags
Hostility	Mutual declaration — open PvP between the guilds anywhere, no murderer penalty; the tool of server rivalries
Neutral	Default PK rules apply

Alliance politics are the real endgame content: sign-farming pacts before siege week, non-aggression deals over boss spawns, betrayals timed for registration deadlines. The gens split adds a second axis — smart alliances keep their guilds on one gens side.

Guild War & Battle Soccer

A guild war starts when both masters agree (/war command era): kills between the guilds score on a public counter until the target score ends it — honor duels at scale, no loot stakes. Battle Soccer is the beloved oddity: the war fought as a soccer match in the Devias stadium, goals instead of kills. Most modern servers keep both as prestige/fun systems alongside ranked content.

The Road to the Castle

A guild's growth arc on any server: recruit to a stable 20+ core → run event brackets together (Illusion Temple fives, Doppelganger squads) → form or join an alliance → farm Signs of Lord seriously for one week → take a siege slot. Even losing sieges pay: participation rewards, practice and the recruiting pitch of being on the board. The castle itself — taxes, Land of Trials, Lord Mix — is the crown, but the climb is what keeps guilds alive.

Continue Reading

Guide	Why it helps
Castle Siege	The war this whole system points at.
Gens system	The faction layer alongside guild politics.
Illusion Temple	The best team-practice event for a young guild.
Classes overview	Balancing a guild roster by role.

FAQ

Can a guild master transfer leadership?
Version-dependent — many classic servers require disband/recreate; modern versions support transfer. Check before your master takes a vacation.

Do guild members share exp or loot automatically?
No — parties handle sharing. The guild provides the people, not the mechanics.

What happens to the guild if the master quits?
It persists; an inactive master freezes invites/alliances — the classic guild-killer. Transfer or plan ahead.

Is there guild storage?
Not in classic MU — guild warehouses exist only as custom features on some private servers.