Final Fantasy XI’s job system is largely adapted from Final Fantasy III. Each job has unique abilities, which must be activated by the player in order to come into effect, last a limited time, and have a “cooldown” period before they can be used again; traits, which are passive abilities that are always in effect; and a special “2-hour” ability that performs some extraordinary function and has an extraordinary 2-hour-long cooldown period to go with it. Players are able to change their jobs any time they wish inside their ‘Mog House’ or ‘Rent-a-Room’, and are also able to get a “support job” once they reach level 18 in order to learn additional skills and try different combinations, though the job will be half the level of the player’s main job. Players are able to improve their job abilities through defeating monsters or completing quests. As of November 2007, a player may choose from 20 different jobs. The first six job classes available were the Warrior, Monk, White Mage, Black Mage, Red Mage, and Thief. Upon achieving level 30 in any of these jobs, a player may opt to complete quests to unlock the jobs of Paladin, Dark Knight, Beastmaster, Ranger, Bard, Summoner, Samurai, Ninja, Dragoon, Blue Mage, Corsair, Puppetmaster, Dancer, and Scholar.