Apart from the graphical improvement, there are 3 new races in Trials of Atlantis (1 per Realm) along with tons of new monster encounters, and the Master Levels. The Master Levels are a set of trials set in a variety of ancient myths including Greece and Egypt. They range from fighting an underwater minion as solo encounter to large scale battle group encounters that need several groups consisting of high level players to beat. One example is the 9th Trial, a giant Phoenix high above the clouds. This Trial requires at least 4 groups of players who have to work together. The Master Levels allow players to progress further, gain better abilities, mighty spells and more.