Sword Art Online killed itself, when they made everyone go back into another game, to save the world again. I should get around to watching the second season sometime.
If you are interested in anime based on MMO's there is; No Game No Life, Ixion Saga DT, Log Horizon, Overlord and Grimgar Of Fantasy And Ash.
Although everyone needs to at the least watch JoJo's Bizarre Adventure.





