Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
Aion is very close to being a perfect example of the current idea of how a fantasy based MMO should be implemented. I would even suggest Aion might be the climax of the typical design elements of the genre. There was room for 1 more player in fantasy based MMO’s (as long as they were a major player) and Aion has taken up that spot, and definitely pushed some competitors out of the picture by doing so.