A clan is a club of users (generally friends) that group together; most players prefer to have friends as clan members, but the larger and more powerful clans will only admit strong characters. The benefits of being in a clan include: a separate chat channel for clan members whose text appears in green on the main chat window, the ability to party with your clan members no matter what levels they are, the ability to party a clanmate without being close enough to manually select them, and finally the ability to get capes. Capes cost a large amount of money and require 144,000 Nation Points (referred to as "NP") per clan, which are gained by killing users of the opposite nationality (+50 NP). Some large bosses also reward you with a few nation points if you manage to find and defeat them (+10-50 NP).
Nation Points can also be lost if a member of the opposing nation manages to kill you (-50 NP). When an individual player's Nation Points come to 0 they have to earn all the points again. Players also lose Experience Points when they die whether they are in a clan or not (and yes if you lose enough you can actually lose levels. A clan's Nation Points are made up of the total Nation Points of each of its members. This determines your clan ranking (V being the lowest and I being the best). At higher ranks, more events become available to you and your clan.

Ranking	National Points Required	Bonus
V (Lowest)	0 - 71,999	None (grade 5, Humans have blue armband, orcs have purple)
IV	72,000 - 143,999	Ability to participate in Castle Siege War (grade 4 , humans have green armband, orcs have blue)
III	144,000 - 359,999	Ability to attempt the Knights quest to obtain a cape (grade 3, Humans have dull bronze armband ( with more intricate detail), Orcs have a gray one with a different design)
II	360,000 - 719,999	Ability to have Knight Symbol on cape (grade 2, Dull Golden armband)
I (best)	720,000+	All of the above. (grade 1, Burnished Gold armband, slight red tint)
5 Best Clans	5 clans with highest total NP	Top 5 Clans in any particular server have Grade I clan armbands (in new servers top 5 clans may be under grade 1), with the added detail of flames running along the design, along with a flame.                    Note: Because of the new expansion Moradon The Resurrection there are 3 clan types ranging from lowest to highest: Clan, Knights, Royal Knights. (each type has additional benefits ex: Longer capes)

The New Clan Point Contribution System This new expansion allows Clan Leaders to have more control over their clan. Clan members also have a chance to contribute more and take more responsibility in the clan. There are two types of Clan Point contribution systems that can be chosen by the Clan Leader. The first is manual contribution where a set contribution amount can be determined by the player. The second is automatic contribution which pulls a percentage of National Point gain from each member of the clan to contribute to their Clan Points. Clan Points are used to determine Clan Rank and Level. Clan Points can also be used to purchase capes for the clan. If a player quits a clan, the clan will lose the total amount that the member has contributed. The member will only get a 30% refund of their total contribution as well.