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Castle Siege War (CSW) guide: time, entry, siege tools and castle rewards

Knight Online Castle Siege War runs every Sunday at 20:30 Turkey time in Delos. Grade 4+ clans, the Guardian Stone, siege tools, the Moradon and Delos tax, Castle Cloak and achievements.

Updated 17.10.2026 2 min read 7 sections
Short answer

Castle Siege War is the clan war for Delos Castle every Sunday at 20:30 (Turkey time, UTC+3). Only clans of Grade 4 and above can take part. The clan that takes the Guardian Stone takes the castle; it holds Delos until the next siege and sets the tax for Moradon and Delos.

Contents (7)
  1. 01What is Castle Siege War?
  2. 02How do you take part?
  3. 03Who can use the siege tools?
  4. 04Getting ready
  5. 05What do you get for taking the castle?
  6. 06Castle Siege War achievements
  7. 07Don't mix these up
Castle Siege War Sun
20:30Turkey time (UTC+3)

Next session: Sunday 20:30 · 6d 07:20

What is Castle Siege War?

The game describes it like this: Delos is a castle siege region. Only clans of Grade 4 and above may take part; the clan that gains control of the Guardian Stone occupies the castle.

During the war only members of participating clans can enter the zone.

How do you take part?

  1. Your clan must be Grade 4 or above.
  2. You get to Delos by warp: 17,000 Noah, for levels 1–83.
  3. To enter during the war you must be a member of a participating clan.
  4. In the Clan Deathmatch, the last clans standing compete for the right to fight the castle owner: the application costs 10,000,000 Noah, closes 2 hours before the Deathmatch, the castle owner's clan cannot apply, and the money is not refunded if you cancel.

Who can use the siege tools?

Tool Who uses it
Large vehicles Clan leader only
Medium vehicles, ladder trucks, catapults All clan members

You get siege weapons from the [Siege Weapon] NPCs in Delos (Serendil, Elrond). You can only transform into a vehicle after the war starts and within 30 meters of your base.

Getting ready

What do you get for taking the castle?

You hold Delos until the next siege and set the tax rate for Moradon and Delos. You set and collect the tax through [Castle Manager] Captain Hugo; the rate can only be changed on channel 1. The tax builds up as coins. The castle clan can also set the dungeon entry fee.

The castle clan gets the Castle Cloak free except for the paint; the effect lasts until the next siege (a purchased cape lasts 30 days). Only the castle clan and its allied clans can enter the Delos dungeon.

The top clans of the Clan Deathmatch receive a Castle Siege Reward Chest from [CSW Manager] Aaron, and the Commander and Vice Commander a Superior Cape Exchange Voucher (7 Days).

Castle Siege War achievements

Achievement Wins Points Reward
Delos Castle 1 10 —
Never Changing Castle 3 20 Monster Stone
Magical Castle 10 30 Crown Prince title (+1% CONT, +1% EXP)
Castle of War 50 40 King title (+20 AP, +2% CONT)
Castle of King's Throne 100 50 Emperor title (+2% CONT)

The King title here is not the nation's elected King, only an achievement title.

Don't mix these up

  • Stronghold Siege War is a separate event: Tuesday evening, three clans end up ruling the city.
  • The Delos Monument and the Delos Guard Stone in the Delos dungeon are different things.

Frequently asked

Every Sunday at 20:30 Turkey time (UTC+3), at Delos Castle.

Clans of Grade 4 and above. During the war only members of participating clans can enter the zone.

By the Delos warp: 17,000 Noah, for characters of level 1–83.

It holds Delos until the next siege and sets the tax for Moradon and Delos, collected through Captain Hugo. The Castle Cloak is free except for the paint, and only the castle clan and its allies can enter the Delos dungeon.

Large vehicles only the clan leader; medium vehicles, ladder trucks and catapults every clan member. You get the weapons from the [Siege Weapon] NPCs in Delos.

10 wins give the Crown Prince title, 50 wins King and 100 wins Emperor.