I really enjoyed my time with the Beta and will probably dabble in it from time to time once it releases its free version, but the way people interact with one another has always bugged me. It does fit the nature of the game, but not so well to point where the novelty outweighs the annoyance of everyone just constantly phasing in and out.
It interests me far more as a weird online experiment than a game.
SnakeLinkSonic's comments