The return of Dungeon Fighter Online (OPEN BETA PT. I STARTS MARCH 24TH!).

There aren't too many big differences between each region -- KDnF is the farthest along and has free skill resets but it's the hardest to get into. CDnF has some region exclusive dungeons. It requires a proxy to play and it's generally REALLY laggy during the peak China times. You also won't be able to PvP in other regions, although it might not be your cup of tea.