Guild

A Guild is a group of Players, most on par with each other in regarding to levels, with an organized structure and a leader in various major online games. Known games that have guilds are «Sword Art Online» and «ALfheim Online». The current number of existing guilds is unknown.

Guilds in SAO could only be formed starting with the 3rd Floor and most known top guilds are composed of Clearers.

Sword Art Online

 * Knights of Blood
 * Fuurinkazan
 * Divine Dragon Alliance (disbanded)
 * Aincrad Liberation Force
 * Laughing Coffin (disbanded)
 * Golden Apple (disbanded)
 * Titan's Hand (disbanded)
 * Black Cats of the Full Moon (destroyed)
 * Fumaningun
 * Silver Flags (destroyed)

ALfheim Online

 * Fuurinkazan
 * Sleeping Knights (disbanded)