Insanely addictive.
This game has been lots of fun. Any class can solo up to the top level but this game is far more fun to play with friends. The game really picks up at the top levels for when you can go huge raids, and do lots of PVP. Since the game is best at it's end game, Blizzard is speeding up leveling so that it's quicker to reach the end game. The game scales very well, it can be played on very low-end machines, and the game looks very nice when you can put the sliders on maximum. Addiction is a possibility... Be careful.