FunOrb

FunOrb is a game site created by Jagex. It has many different single and multiplayer games, and is sometimes used as a clan event by some  clans.

Arcanists
Arcanists is a very popular multiplayer game on FunOrb. Between 2 and 6 players can play at once. The aim of the game is to kill the other players using magic spells. There are a variety of spells that can be used in each spell book, ranging from fire balls to shields to a rain of fire (in the basic spellbook alone). Non-members can only access 2 spell books, but members can access many more.

The game is popular because up to 6 players can play at once. This means smaller clans can have all their members play, and larger ones can spread their members over multiple game. It is also enjoyed because of the variety of games and different options available. Members are able to play rated games, to gain a higher rating, but non-members cannot, so stay at the starting rating of 1000.