Guides
Everything you need to know about ThunderMU — events, bosses, invasions, and chaos machine recipes with drop tables and schedules.
Castle Siege & Castle Deep
Map: Valley of Loren · Move list (M) → LorenDeep (level 150+, free)
Castle Siege is the weekly guild war for the Castle of Loren. Guilds register during the week, hand in Signs of Lord to earn a place among the attackers and on Sunday try to break into the castle and take the Crown. Castle Deep is a separate monster invasion on the same map, three times a day, open to everyone.
Siege Cycle
Every week
Monday 00:00 to Monday 00:00
Registration
Monday – Tuesday
Guild Master, at the Guardsman
Signs of Lord
Wednesday
Handed in at the Guardsman
Siege Battle
Sunday 13:00 – 14:00
Winter time
Castle Deep
04:45 · 12:45 · 23:00
Every day, 30 minutes
Time zone
Server Time
All times on this page
Summer time
The siege schedule is set in winter time. While summer time is active (last Sunday of March to last Sunday of October), every siege phase starts one hour later on the server clock — the battle is at 13:00 – 14:00 in winter and 14:00 – 15:00 in summer. The siege times on this page follow the season selected here.
Who Can Take Part
The guild that holds the castle when the battle ends owns it for the next week and its Guild Master becomes the Castle Lord.
Requirements
- You must be in a guild — only the Guild Master can register it
- No minimum guild size and no minimum Guild Master level
- Up to 100 guilds can register each week
- The castle owner guild can't register — it defends automatically with its alliance
- Guilds in the same alliance fight on the same side
- Each attacking alliance is its own side — attackers fight the defenders and each other
Weekly Schedule
The cycle is 7 days and restarts every Monday. Registrations and Signs of Lord from the previous week are cleared.
| Phase | From | To | What happens |
|---|---|---|---|
| Guild Registration | Mon 00:00 | Tue 23:59 | Guild Masters register their guild at the Guardsman. |
| Registration Closed | Tue 23:59 | Wed 00:00 | One-minute break. |
| Signs of Lord | Wed 00:00 | Thu 00:00 | Registered Guild Masters hand in Signs of Lord at the Guardsman. |
| Waiting | Thu 00:00 | Fri 12:00 | Nothing to do — Signs of Lord are closed. |
| Attackers Announced | Fri 12:00 | Fri 19:00 | The attacking guilds are chosen by Signs of Lord and the list is final. |
| Preparation | Fri 19:00 | Sun 13:00 | Both sides get ready for the battle. |
| Battle | Sun 13:00 | Sun 14:00 | 60 minutes of siege. Whoever holds the castle at the end wins. |
| Siege Over | Sun 14:00 | Mon 00:00 | The winner owns the castle. A new cycle starts on Monday. |
Showing winter time (Server Time).
Registration & Signs of Lord
Done by: Guild Master

Guardsman
- 1Travel to the Valley of Loren. Open the Move list (M) and choose LorenDeep (level 150+). The two Guardsmen stand in front of the castle at 86, 61 and 99, 61.
- 2Register the guild (Monday – Tuesday). The Guild Master talks to a Guardsman and registers the guild for the siege.
- 3Collect Signs of Lord. They drop from monsters of level 25 to 150 on every map — including all Castle Deep monsters.
- 4Hand them in (Wed 00:00 – Thu 00:00). The Guild Master gives the Signs of Lord to the Guardsman. Every sign adds to the guild's count.
- 5Attackers are picked (Friday 12:00). The guilds with the most Signs of Lord become the attackers.
Item
Sign of Lord
Drops from
Monsters Lv 25–150
Maps
All maps
Hand in
Wednesday only
Signs of Lord can only be handed in for 24 hours on Wednesday, so start collecting early in the week.
The Battle
The battle lasts 60 minutes, Sunday 13:00 – 14:00 (winter time). If no guild qualified to attack, there is no battle and the owner keeps the castle.
Castle Defenses
Castle Gate
DefendersCount: 6 · HP: 500,000
Blocks the way into the castle. Attackers have to break it.
Guardian Statue
DefendersCount: 4 · HP: 400,000
Heals defenders standing near it. Destroy it to stop the healing.
Canon Tower
DefendersCount: 9 · HP: 800,000
Fires at attackers who come close.
Slingshot (Attack)
AttackersCount: 2 · HP: —
A siege weapon a player operates to bombard an area. Hits harder than the defense slingshot.
Slingshot (Defense)
DefendersCount: 2 · HP: —
The defenders' siege weapon, used to bombard attackers outside the walls.
Other NPCs on the Map
Guardsman (86, 61 · 99, 61)
Registration and Signs of Lord
Gatekeeper (139, 101)
Entrance to the Land of Trials
Pamela the Supplier (90, 44)
Siege supplies, outside the castle
Angela the Supplier (89, 218)
Siege supplies, inside the castle
Taking the Crown
The throne room is reached through a portal at the rear of the castle, around 94, 242.
Crown
176, 212
Register it to take the castle
Crown Switch 1
184, 195
Must be held to open the Crown
Crown Switch 2
167, 195
Must be held to open the Crown
Senior
179, 214
Castle management for the Castle Lord
- 1Break through the gates and statues and fight your way to the rear of the castle.
- 2Enter the throne room through the portal.
- 3Put one player from your side on each Crown Switch at the same time. The Crown stays open only while both switches are held.
- 4A player with the Guild Master rank from your side registers the Crown. It takes 60 seconds. Other ranks can't do it.
- 5When the Crown is registered, your alliance becomes the defender and the others have to take it back. Hold it until 14:00 to win.
Battle Ranking
During the battle the server ranks players in four categories. The number 1 player in each category gets one random reward from the list below.
What the Castle Owner Gets
The owner guild's master is the Castle Lord and manages the castle at the Senior in the throne room.
Castle Lord & the Senior
- Sets the tax on NPC shop purchases and Chaos Machine mixes for the whole server — the money goes into the castle treasury
- Withdraws zen from the treasury
- Repairs and upgrades the gates and statues
- Decides who may enter the Land of Trials and sets an entry fee
Land of Trials
Gatekeeper at 139, 101
- Experience rate 150 (Valley of Loren uses 100)
- Jewels of Guardian drop from monsters of level 25 to 150
- Open to the castle guild and whoever the Castle Lord allows
Senior Mix
A special mix at the Senior. On ThunderMU it can be used any number of times per day.
Ingredients
- 3× x10 Bundled Jewel of Bless
- 3× x10 Bundled Jewel of Soul
- 30× Jewel of Guardian
- 1,000,000,000 Zen
Senior Mix Result
One random item from these sets, with 1–2 excellent options, a set option and 1–2 sockets:
Castle Deep
Available for: Everyone
Castle Deep is a monster invasion of the Valley of Loren. It is a separate event: no registration, no guild needed, and it has no effect on who owns the castle. Anyone who can reach the map can join.
When
04:45 · 12:45 · 23:00
Every day, Server Time
Duration
30 minutes
Warning 5 min before
Where
In front of the castle
x 60–132, y 28–101
Boss
Erohim
Spawns in wave 3
In-game announcements
- Castle Deep will start in 5 minute(s)
- The Castle Deep started
- Castle Deep is over
Waves
Every run picks one of two scenarios at random (50 / 50). The first wave spawns farther from the castle, waves 2 and 3 spawn closer to it.
Wave 1
starts at 0 min · 150 monsters · 15 of each · y 28–73Wave 2
starts at 10 min · 150 monsters · 15 of each · y 58–101Scenario A
Scenario B
Wave 3
starts at 20 min · 91 monsters · 10 of each · y 58–101Wave 3 is the hard one — there are 10 Hydras (3,500,000 HP each) and 10 Zaikans (8,000,000 HP each).
Erohim
The Castle Deep boss. He spawns together with the last wave and drops 3 items, each picked at random from the list below. Excellent items come as +4 to +11 with 1–2 excellent options and sometimes Luck.
Level
128
HP
6,000,000
Damage
12,500–13,000
Defense
1,000
Drops
3 items
Excellent Sets
- Ancient Set
- Ashcrow Set
- Black Dragon Set
- Dark Phoenix Set
- Dark Steel Set
- Demonic Set
- Divine Set
- Eclipse Set
- Glorious Set
- Grand Soul Set
- Iris Set
- Piercing Groove Set
- Thunder Hawk Set
- Valiant Set
Excellent Weapons
- Arrow Viper Bow
- Celestial Bow
- Saint Crossbow
- Great Reign Crossbow
- Dark Breaker
- Dark Reign Blade
- Thunder Blade
- Knight Blade
- Sword of Destruction
- Staff of Destruction
- Staff of Kundun
- Dragon Soul Staff
- Dragon Spear
- Holy Storm Claws
- Piercing Blade Glove
- Lord Scepter
- Great Scepter
- Great Lord Scepter
- Shining Scepter
- Demonic Stick
- Ancient Stick
- Book of Lagle
- Book of Neil
Jewels
- x10 Bundled Jewel of Bless
- x10 Bundled Jewel of Soul
- x10 Bundled Jewel of Life
- x10 Bundled Jewel of Creation
- x10 Bundled Jewel of Chaos
- Jewel of Guardian
- x10 Bundled Jewel of Guardian
- Jewel of Luck
- Jewel of Skill
Chaos Mix
- Talisman of Luck
Misc
- Demon
- Guardian Spirit
- Kalima Ticket
- Blood Castle Ticket
- Devil Square Ticket
How Castle Deep & Castle Siege Connect
| Castle Siege | Castle Deep | |
|---|---|---|
| Type | Guild vs guild (PvP) | Monster invasion (PvE) |
| How often | Once a week, battle on Sunday | Three times a day |
| Who | Registered guilds and their alliances | Guild Owners |
| Registration | Yes — Guild Master at the Guardsman | No |
| Map | Valley of Loren | Valley of Loren |
| Prize | Castle ownership, taxes, Senior Mix, Land of Trials | Monster drops and Erohim's loot |
Castle Deep helps you get ready for the siege
- ✓Signs of Lord drop from any monster of level 25 to 150. Every Castle Deep monster is in that range, and they come in waves of up to 150.
- ✓Jewels of Guardian, needed for the Senior Mix, drop from Erohim. They also drop in the Land of Trials and Kalima 7.