"To understand the game Aion, you first need a bit of background on its setting. Aion has many of the trappings you would expect to find in a typical fantasy MMO, but it is a completely original IP with some unique elements. As a player, you are a resident of Atreia, created by the deity Aion, and torn asunder by ancient war between the human races and the Aion's former servants, the Balaur. After millennia of struggle, the Balaur succeeded in destroying the Tower of Eternity, Aion's embodiment on Atreia, splitting the planet in half. In the game's present day, the Asmodians live in the harsh, frigid climates on the upper half of Atreia, far from the sun; while the Elyos live in the sun-drenched, tropical lower half of Atreia. Neither recall the details of the cataclysm that split the world and both blame the other for the destruction that befell Atreia."