The Aion Class System
Aion offers four basic classes: Warrior, Scout, Mage, and Priest. These classes further develop into eight advanced classes: Gladiator, Templar, Assassin, Ranger, Sorcerer, Spiritmaster, Cleric, and Chanter. Each class has its own unique skills and skill chains, and falls into a traditional MMORPG role.
When a player begins, they must first choose their race - Elyos or Asmodian. Both races are able to access all classes, but some special class skills will differ in implementation based on race. Players must also choose one of the four basic classes. Upon reaching level 9, they will receive a quest which will allow them to ascend as a daeva and specialize in one of the two classes available to their basic class. Class choices are permanent, so do research before choosing which class is best for you.
Unlike other MMORPGs where players must either distribute skill points or talent points to make their character effective, stat gain and skill gain are automatic and unrestricted in Aion. For example, a Chanter can learn all skills for a Chanter simply by buying and using the appropriate skill books after they become available to her. Trainers do not need to be visited to level skills; skills level automatically upon levelling.
Specialization in Aion instead comes through the use of Stigma Stones, which allow players to learn a limited amount of skills from other classes via equipping Stigma Stones. This allows a sort of multi-classing system in Aion, allowing you to take a single class for its skills, and then enhance those skills with those of other classes.