FlyFF - Flyff (Fly For Fun) is one of the greatest running fantasy based MMOs.
Eden Eternal - Eden Eternal is a Fantastic Browser-based, Action-Adventure, RPG and MMO video game developed by X-Legend and published by Aeria Games.
NosTale - NosTale (The Tale of Nomads of Silver Spirit) is a totally free MMORPG that includes simple (but beautiful) graphics and also lots of class options.
Aura Kingdom - Aura Kingdom is 3D Action-Adventure, MMO, RPG, Free-to-play Fantasy-based video game developed and published by Aeria Games.
Adventure Quest - Adventure Quest is an Action-Adventure, Free-to-play (One Time Membership Fee) Single-player MMORPG, Browser-based and Fantasy-based video game developed and published by Artix Entertainment.
Ragnarok Online - Ragnarok Online is a Fantasy-based and MMORPG video game developed and published by Gravity Co.