Clan

A clan or a guild is a united group of players who may choose to participate in player killing (pking), train skills, participating in mini-games, holding events, or simply have meetings with one another. Clans often have allies and enemies. Some clans are roughly constructed, participating only in a single task, such as pking or a single minigame. Other clans have strict codes and rules, setting down punishments for breaking these rules. They are completely unnofficial and Jagex does not support them in any way, unlike in other MMORPG's where clans may be part of the game.

Clan players often wear team capes in order to identify themselves to their clan members.

Wars
Sometimes one clan might have a disagreement with another clan, which causes clans to get mad at each other. Usually a disagreement leads to name calling and hurt feelings, this is when each person will get the whole clan involved. This mostly results in wars. Some clans have wars for fun, or to prove that their clan is better than another, while others try to avoid wars. Some clans will have a contest in another field like rune crafting or other skills. Sometimes clans wars will lead to rivalries. This means that when clans are rivaling each other, if one person from the team sees another they will most likely call other members of the clan, this results in frequent ongoing wars between clans. This can become very expensive and drain a person money and resources quickly if they are on the losing end. The winning end however is very prosperous. When one team wins there is a momentary time of peace with minimal fights, this is because the losing team needs to recuperate and build up resources in order to fight the other clan again. These clan rivalries can last for long long periods of time. A real oddity however is when clans eventually decide to merge to form a larger and more formidable clan in order to take down tougher enemies of their clan. This may sometimes fail because of inborn disputes among once rivaled clan members. But if the merge is successful the clan may become twice as powerful and continue to build in power.

Types of Wars
Some clan wars may have certain wars and thus have a name.

Iron War
This type of war requires that every member of both clans wear full iron. Very popular among low leveled clans. There is normally no conditions on which weapon you may bring, although a Rune Scimitar is a popular choice.

Rune War
This type of war requires that every member of both clans wear full rune. Not as popular as iron wars, as full rune costs much, much more than full iron, which means that some players are concerned of losing it they may not turn up to the war.

Most of the large Clans only accept wars with other clans if it is a full rune war.

Castle Wars War
This type of war is done in Castle Wars. It is not that popular because one clan may be bigger than the other, so not all of both clans may fight, and also due to the fact that there will always be non-clan members interfering the battle, giving one side more of an advantage.

Duel Arena War
This is always popular among high and low leveled clans. The Duel Arena War is popular for multiple reasons:
 * Staking can be done so some may win prizes.
 * Rules can be made that are impossible to break.
 * Random PKers/Castle Wars players will not interfere.