If a clan's level is five or above, the clan leader can go to an NPC that creates alliances and request the creation of an alliance. Alliance names may be comprised of up to sixteen alphabetical and numerical characters, not to include spaces or special characters.
The leader of an alliance has the right to add a clan to their alliance. An alliance leader can remove a clan that currently belongs to their alliance. Afterwards, the dismissed clan cannot join another alliance for twenty-four hours after being dismissed. The alliance that removed a clan from its alliance cannot accept a new clan for alliance for twenty-four hours. Should a clan leave an alliance voluntarily rather than being dismissed by an alliance leader, the alliance can accept another clan to join it at any time.
An alliance leader may dissolve an alliance without obtaining consent from clan leaders whose clans belong to the same alliance. The alliance leader who dissolved the alliance cannot establish a new alliance for ten days after the alliance's dissolution. The alliance leader also loses experience that is equal to one character death when the alliance is dissolved. When an alliance is dissolved, unlike the dissolution of a clan, it will take effect immediately. Any related functions, such as alliance chat, will stop at once. Alliance-related actions, such as dissolve, leave, and dismiss can happen at any time, even during a clan or alliance war. However, an alliance cannot be dissolved during a castle siege.
A clan that has left an alliance can not join another alliance for twenty-four hours.
A chat channel is offered only to alliance members. This channel exists separately from the clan chat channel. While players are in a clan chat channel, the contents of an alliance chat channel will not be visible and vice-versa.
An alliance leader can create a crest for his alliance that its allied clans can display in addition to each clan's crest with the command /allycrest. The alliance crest is displayed in front of a clan's crest. The size of a crest is limited to 8 pixels in width and 12 pixels in length (256 color [8-bit] BMP file).
An alliance member can view information about the master clan of their alliance, their own clan, the names and total numbers of allied clans and the number of currently logged-in allied clans with the command /allyinfo.
| Commands | Descriptions |
|---|---|
| /allyinvite [clan leader] | The command used by an alliance leader to invite a clan to join their alliance. |
| /allyleave | The command used by a clan leader to leave the alliance that their clan is currently a member of. |
| /allydismiss [clan name] | The command used by an alliance leader to dismiss a particular clan from their alliance. |
| /allydissolve | The command used by an alliance leader to dismiss their own alliance. |
| /allycrest | The command used by an alliance leader to register a crest for their alliance. |
| /allyinfo | The command used to look up the information about their own alliance. |
During a castle siege, the following rules are applied to clans regarding relationships with their alliances: