I've palayed loads of them,
Runescape (how the fuck did I play it?)
Tibia (fucking Brazilians, always killing me)
FlyFF (was OK, but too much of a grind to get to 15, so I quit)
MapleStory (holy fuck that game was boring)
MU Online (poor Diablo II clone)
Rakion (not really an MMO)
Last Chaos (good, but I got bored)
KAL Online (meh)
Planeshift (only played because it is in the Ubuntu repositories, felt incomplete)
2 Moons (meh)
Knight Online (meh)
Rappelz (ok, but boring without friends playing it)
Silkroad (boring until you get jobs)
I'm currently trying WoW, Undead Warlock lvl 6, it is OK, but idk If I will buy it, and then pay for a subscription.