Ar tonelico Qoga is the final installment in the Ar tonelico series. The story takes place in Sol Cluster, a kingdom ruled by an organization called Clustania and their ultimate goal is to enslave humans and rule the world. However, the two key Reyvateils (humanoids) they need to accomplish their goal meet Aoto and fight back against injustice.

Action Battle - Unlike the previous Ar tonelico series, the latest title incorporates an action based comabt system. You will run and attack as if you are playing an fighting game or action game.
Song Magic - During combat song magic can be used by making key button pressing according to the rhythm of the music. If your rhythm is good the stronger the magic becomes.
Cosmoshphere - Ar tonelico features a revolutionary system that combines character development with skill acquisition. By diving into the Reyvateils subconscious world, one gets to know the character of the team member better, while acquiring new spells.
Multiple Story Paths - Depending on how you progress through the game your outcome will change. There is over 2 hours worth of ending for extreme replay value.