I haven't played this one for very long but it's a lot like World of Warcraft
there are some differences but it's basically a WoW clone and a great alternative if you're tired of paying the monthly subscription!
an easy game play
choose different factions/races
a good amount of character customization and some interesting races (gibberlings, arisen, orcs, elves)
oh boy do I love playing an arisen! (or undead)