I play UD
simple, can run on any machine with an internet connection. Limited number of moves you can make so it dosn't take over my life. And no pretentious high level people running calling people noobs, since xp takes you only so far until its no use to you. And you don't really lose, you just change sides.
But then again Shmargin, I don't know i'f you'll like the graphics. Consider it one of those games that requires imagination assisted graphics.