As above, if you ever played Rez back on the Dreamcast/PS2 or the XBLA HD version, then this game is very similar and much prettier.
It is quite short, and the replayability is more or less trying to achieve perfect scores and unlocking things (Just like Rez anyway), but it is still a fun game. Great to show off on a decent HDTV and sound system.
Playing with the Move, it is decent enough, much better than with the Kinect I personally think, but I rather play on gamepad instead.