flyffer at hart

hi I love fly for fun. as we all know it's not compatible with ubuntu or wine. I've tried other mmorpgs that are compatible but there just not the same. I can't really put my finger on it but the feel of thees games are wrong. I still have my xp desktop at home but my laptop is only ubuntu, and I'd like to play the same game on the road as at home. any one know a good linux&windows free mmorpg that feels like flyff? (I know I'll be asking for the moon next week)