Castle Siege: The Ultimate Guild War in MU Online
Castle Siege is the most epic large-scale PvP event in MU Online. Once a week, guilds and their alliances fight for control of the grand castle in the Valley of Loren. The victors claim the prestigious title of Castle Lord, gaining unique powers, access to special shops, exclusive events, and server-wide benefits.

How Castle Siege Works
Castle Siege is a weekly event where guilds compete to become the castle’s ruler. The event is divided into several phases, each with specific rules and objectives:
- Registration Phase: Eligible guilds sign up to participate and declare themselves as attackers or defenders.
- Sign of Lord Bidding: Guilds collect and submit Sign of Lord items to qualify for participation. The guilds with the most Signs of Lord are chosen as attackers, with the reigning castle guild as defender.
- Preparation Phase: The selected guilds get ready, form alliances, and plan strategies for the siege.
- Castle Siege Battle: During the main event, attackers attempt to break through the castle gates and take control of the Throne Room. Defenders protect the throne and repel the invaders.
Registration & Entry Requirements
- Guild Master Level: The guild master must be at least level 200 and own the Guild Master Character.
- Sign of Lord Items: Only guilds that submit enough Sign of Lord items during the registration phase can participate as attackers.
- Alliances: Each guild may form up to 2 alliances, allowing for massive team battles.
- Maximum Participants: Up to 100 members per main guild, plus alliance members.
- Event Schedule: Usually held on Saturdays or Sundays (varies by server), lasting 2 hours. Times are displayed in-game and announced in advance.
- Entry Location: Enter through Valley of Loren at coordinates (96, 113).
Event Mechanics & Rules
- Siege Weapons: Attackers use Siege Golems and Catapults to break gates and barricades.
- Castle Gates & Statues: Defenders can repair gates and activate guardian statues to strengthen defenses.
- Life Stones: Attackers can place Life Stones as respawn points close to the castle.
- Switches: Attackers must activate 3 switches inside the castle to unlock the Throne Room.
- Throne Room: The core objective—occupy the Throne Room by having the guild master (or authorized member) successfully “stamp” the throne. Whoever holds the throne at the end wins.
- PvP & PK Enabled: All forms of PvP are allowed. Massive battles, skills, and combos rule the castle grounds!
How to Win Castle Siege
The guild/alliance that controls the Throne Room at the end of the siege timer wins Castle Siege and becomes the new Castle Lord.
- Control Strategy: Focus on holding the switches, defending the Throne Room, and supporting your guild master during stamping.
- Communication: Use voice chat and well-organized commands to react quickly and coordinate attacks or defenses.
- Class Roles: Combine strong tanks, damage dealers, and support classes for best results. Use Dark Lords for buffs and summoning, Elves for defensive auras, and Wizards for mass damage.
- Counter-Attacks: Attackers should try to break through defenses in waves, while defenders focus on choke points and respawn points.
Castle Siege Rewards
- Zenn & Jewels: All participants get Zenn (in-game currency) and jewels such as Jewel of Bless and Soul for participating and achieving objectives.
- Castle Lord Privileges: The winning guild master receives the Lords Mix and access to special shops, tax system, and server-wide buffs.
- Lord Mix Items: The castle guild can craft Lords Mix for exclusive high-end gear and bonuses.
- Tax Control: The Castle Lord can set tax rates for the in-game shops, generating guild income.
- Server Buffs: Everyone on the server enjoys increased drop rates and lower taxes while the castle is under good leadership!
Castle Siege Map & Key Areas
- Valley of Loren: The staging ground and entry to Castle Siege, open to all participants.
- Outer and Inner Gates: Two sets of gates, protected by barricades and guardians.
- Guardian Statues: Destroying these weakens the castle's defenses.
- Switch Room: Houses the 3 switches needed to unlock the Throne Room.
- Throne Room: The center of the castle and the ultimate objective!

Castle Siege Tips & Strategies
- Preparation: Bring plenty of potions, repair your gear, and coordinate roles before the event starts.
- Practice: Run practice runs with your guild to learn the map and timing of the event.
- Focus Fire: Target key enemies and support your guild master during the Throne Room occupation.
- Timing: Watch the timer closely—control of the Throne Room in the final minutes is crucial.
- Defend Respawn Points: Prevent attackers from placing Life Stones near the castle.
Frequently Asked Questions
- Q: Can any guild participate?
A: Only guilds with enough Sign of Lord items that register during the Registration Phase can enter as attackers. The current castle holder is always the defender. - Q: What happens if my guild loses?
A: You get participation rewards, but only the castle holders enjoy the lord privileges. - Q: Can alliances betray you?
A: Alliances are locked for the event; you cannot change or betray alliances during Castle Siege. - Q: What are the best classes for Castle Siege?
A: Dark Lord (for buffs, summons), Elf (support/defense), Wizard (AoE), and tanks like Dark Knight are all crucial.
Why Castle Siege is a Must-Play Event
Castle Siege offers the ultimate MU Online experience: massive PvP battles, deep strategy, teamwork, and huge rewards. Whether you’re fighting for glory or aiming to rule the server as Castle Lord, this is where legends are made. Rally your guild, master the strategies, and prepare for the most intense guild war event in MU Online!