Aion: The Tower Of Eternity

Well there are a lot of rumors concerning WoW Clone, but yet, I have tried both of the games and well, just like WoW (World Of Warcraft) was an Everquest Clone and overpassed it, Aion as it's similarities with WoW, such as with Final Fantasy, and may overpass them, and the most features of the game it's most new and inovating.
 

Grinding and Quest System

Basiclly Aion Gold grinding, is essential about quests, at least till level 20, that is when the real Aion Gold unveals, you could say that there is where the WoW similarities are, on the questing system, well i partially agree, but it has the best of WoW, not only, WoW, but even so the quests, and the main storyline plus the cutscenes where you see in 1st and 3rd prespective of your character, makes you stick on the monitor for hours, and not to mention the quests that are not from the story like, are fun to do to, I won't develop much on this subject, as I don't want to spoil any surprises in the game
 

Skill System & Divine Power

About the skill system, I got to say it is the most inovating system i have ever seen, lets take in for example the Gladiator, it makes huge ammounts of damage, and the way that the MOBs react to strong skills, such has slide backwards, and the effects are really done carefully, not to mention the combo system, wich is also a great feature putten into the game, wich lets us make a skill chain however we like, and this skill combo also exists on Magicians, such has the Sorcerer, wich he can do various spell chains/combos.
Now where the game really introduces a new featur, Divine Power or DP, it is gained in increments by defeating monsters, all of which possess a certain amount of Aether. When a Daeva successfully slays a monster, this energy is released and absorbed as Divine Power. You can collect, store it, and use it to bring an amazing finishing move, wich they mention as Celestial Brute Force, and you can also use it to create/refine, higher quality weapons or amors.