Flyff

Fly For Fun (Flyff) is the flagship MMORPG from Gala-Net, inc. Developed by Aeonsoft, the game takes place in a beautifully rendered 3-D environment and features an exciting mix of high flying vehicles intertwined within fantasy-inspired game play with impressive Anime style graphics. It is completely free to download and play.

More details, just link to the official site:flyff.gpotato.com