AION is the first game to introduce a so-called PvPvE system, which means that they usually PvP and PvE elements in other online games here are tied together and interact. Many of the PvE-events that occur will have a direct impact on the PvP scene, and vice versa.
One of the game's feature is all ability to fly, and AION takes players' ability to fly to a whole new level, then it evolved to this function as a basis. This means that the players, provided they met the requirements, it will be able to fly freely in the world, and that many missions and PvP conflict will be taking place entirely in the air.
Server-specific storylines are a way for players on each server to influence the story in a unique direction depending on the events that had taken place, and how the players' response been to these. In other words, different servers have completely different atmospheres and conditions, and the players' role in shaping the world have been cited as an important aspect of the design work behind AION.
There are 4 grade schools in Aion, which at Level 10 developed further to 8 advanced classes. The 4 schools are "school of Cleric," "School of Scouts," "School of Warriors" and "School of Mages". These flows into the 8 advanced classes; Cleric, Chanter, Ranger, Assassin, Templar, Gladiator, Sorcerer and the Spirit MasterCard.
A unique system called "Stigma" works of AION as a way for players to develop their characters, not only vertically but also horizontally, while they gain experience. With the help of this system will also be able to "steal" abilities from other classes, and thus able to create unique combinations of skills.