Lineage2 with free trial

http://www.lineage2.com/freetrial

Lineage2 is one of the first and most awesome MMORPG games I’ve ever played. It has a fantasy world (the world of Aden), 36 classes, 6 races, countless quests, real castle sieges, real and fast PVP battles.
The game is pay to play and this is the only reason many people stay away of it but I think, it’s the only option for really fun gameplay.

I played Lineage 2 some time ago, in fact I spent more than a year, working during the day and playing during the night. This time was so fun, I haven’t played any other game with such enjoyment.