Happened to stumble upon this today while at work doing some Flash research, and so far as I know, this appears to be one of the only Flash MMO's out there, and DAMN does it look badass!! Anyone else try it out in the past? I might be up for a game tonight if I don't get too walled up with the PvP League:
http://www.remnantsofskystone.com/
I played it when it came out of Beta on Kongregate. I didn't like it too much, mainly because I felt the controls made the combat really stiff. That's just me though, all I did was complete the tutorial and I couldn't make myself struggle to play more.
I only used the character that grappled onto surfaces with hooks or something though, so that may be why. Perhaps the hovering character would be better.