War of Emperium

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General Info


The War of Emperium is a game feature that allows guilds to fight in order to conquer a Castle to be the headquarters for the guild, and get benefits and special advantages.

Owning a Castle gives your guild several benefits. First off, you are able to access the Guild Dungeon associated with the realm your castle resides in for free (see below). These dungeons have several strong monsters that in some cases do not spawn in the normal world. Secondly, every night, 4 or more (depending on the economy of the castle) treasure boxes will appear in the castle giving useful items and equipments.

Castle Locations

4 castles are available in each realm:


  • All players are allowed to enter WoE castles.
  • Only players belonging to a guild with the Official Guild Approval skill can damage an Emperium.
  • The Emperium will only be available at certain hours a week. These periods are known as WoE periods. The castles are still accessible outside of these hours.

Project Zero WoE takes place at:

(Server Time UTC)

Saturday Time(s) Sunday Time(s)
15:00 AM 13:00 PM

At the beginning of WoE, characters from guilds other than the castle owner will be teleported out.


The character to deal the last hit against the Emperium claims the castle. All characters with a different guild, allied or not, will be warped out at that point. Only normal attacks can damage the Emperium, as all active skills miss (except Gloria Domini and Gravitational Field). After a castle is claimed, other guilds can immediately re-enter and attempt to break the Emperium. The last owner before the Emperium disappears at the end of the WoE period holds it until the next period.

Guild mates and Allied Guilds are considered allies in castles and can not attack each other. Members cannot be expelled, and alliances cannot be broken by members inside a castle.

The owning guild of a castle has several advantages. Guardians are summoned upon the request of the castle owner's guild leader. They will automatically attack all non-allied characters. Guild members can also click on Flags outside of the castle to be instantly teleported to a specific location inside the castle.

An NPC for WoE Damage Testing can be found at prontera159191. This NPC will allow you to warp to 5 different PvP-enabled rooms with WoE restrictions in place, to help with testing for WoE.

Disabled Skills

The following skills cannot be cast within castles:

Skills cast outside the castle will not disappear upon entering. Using items that activate the skill will also fail, but Autocast equipment can grant the skills in a castle.

Battle Mechanic Changes

  • Flee is reduced by 20%.
  • Long range and melee normal attacks are reduced by 20%.
  • All skill-based damage is reduced by 40%.
  • Traps last 4 times as long.
  • All knock back effects are disabled. Some skills like Cicada Skin Shed, Shadow Leap and Phantom Thrust may lose some functionality due to this.
  • Equipment that prevent skills to be canceled during casting (Phen card and similar items) do not function.

Other Gameplay Changes

  • /noctrl does not work; players must hold down the mouse button for normal attacks.
  • Damage numbers do not appear.
  • /mineffect is automatically activated.
  • A character's guild emblem is shown above their head.
  • Death does not cause experience loss.

Guild Dungeons

Each WoE realm contains an associated Guild Dungeon. These guild dungeons are accessible to everyone for a fee of 30,000 zeny. If you own a castle in that region, the dungeon is free to enter. Guild dungeons can not be entered during WoE times.

Guild dungeons (GDs) are PVP maps, so it's possible to attack all other players there who are not in your Guild or an allied Guild. Even players in your party who are not in your Guild / allied Guild can be harmed by you.

Entrance Locations

Realm Location
Valkyrie (Prontera) prt_gld15699
Britoniah (Geffen) gef_fild13195241

Guild Coins

You can obtain 25630.png Guild Dungeon Coin and 23712.png Guild Dungeon Coin Pouch by defeating monsters in the Guild Dungeon. The Pouches give you Guild Dungeon Coins, which can be exchanged for various consumables and PVP equipment at the Guild Office, located at prontera75102.

Treasure Boxes

See Castle Economy.

Castle Management

A butler NPC is provided in each castle for the guild leader to manage the castle. The following functions may be influenced by what Guild Skills are available.

Invest in Commerce Development Invest to increase the castle's economy. Every 5 points on investment adds one new treasure box to the castle's master room. The type of treasure box alternates between the two available at that castle.
Invest in Defense Increase your castle's defense by investing in it. Each point of defense investment will improve the Guardian HP and Emperium HP by an unknown amount, and also improve the defense and attack power of the guardians by an unknown amount.
Hire Guardians Hire a guardian to ease the task of guarding your guild's castle. The guild must have the Guardian Research Skill in order to do this.
Hire Kafra Employee Hire/fire Kafra NPCs inside the castle. Through the employed Kafra NPC, guild members can use the Kafra storage free of charge. The guild must have the Contract with Kafra skill in order to do this.
Enter Master Room Enter the room where treasure boxes spawn.