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DoTA
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Well despite you dont want a game that you pay for Hellgate London could be it. I mean I dont like it too much but hey, you might. You need a fairly decent computer to run it also.
IMO dont play requiem, I felt a grind at lvl 7... It was just a big grindfest for me but i only played for a few days so I can't really give a good opinion about the game but to me it seemed like the gore of the game got old after a while because there was nothing unique associated with the gore.
Hellgate London is probably the best you can find right now but it can only last for so long..
Priest is pretty sick.
I remember a vid of a dude blowing up a cow.