I'm currently playing Order & Chaos (on iOS though) and it's really good.
It's basically a good WoW clone. I wasn't sure how well it would play with a touch interface, but I was pleasantly surprised.
I picked it up when it was on sale ($0.99 or $2.99, can't remember), but having played it I would say it's worth the $6.99 they are asking. You get 3 months of play time when you buy it, then it's $0.99/mth, or $2.99 for 6 months ($0.50/mth).
Iruka Online , Celes Arca, there seems to be a bunch more but it may be difficult to get over the bad english. I found them to be entertaining nonetheless.