The other day the client for Battle of Destiny showed up on my ISPs server, I had never heard of it but I read '2D arcade style MMO' in the description and decided to download it and check it out. Now I can't stop playing it and I am not sure why...the boasted gamepad support is terrible (I had to use Xpadder to map most of the controls to my 360 controller and double tapping the analogue stick to run is a pain in the ass), I am fairly sure that all the text was machine translated from Chinese because it is often an undecipherable form of English, plus the game has all kinds of interface problems...but I just keep booting it back up.
Anyway, check it out if it looks like your thing.
Couldn't find many good screens online so I took a few.
Some higher level pics from here.