I have to tell you. I was addicted to it halfway through the tutorial.
My only complaint was that you have to shoot each individual Elebit (as in, click the A or B button seperately for every single one, which can be a good amount sometimes), but then it was revealed that there is an item which allows you to do more than one at a time, which makes up for that.
I also can't see it getting old, really, because on the first level I did horribly and passed it, so there's plenty to go back and do. And there's also the "make your own mission" thing, which I have yet to try out.
I bought it on about 2 weeks ago. its a great game, it has a whole bunch of elements which bring everything together making it your-not-so-typical-just-another-Japanese-game. Different Elebits that all have their own different ability which makes the game much better than expected. The exceptionally boring childish story-line is made up by its ability to make you play the game continually non-stop for hours on end trying to catch every litte one of those buggers. If you buy this game it will become one of those 'just a-minute im almost done'. (waits 2 hours) OK what was I doing? Not-only is this game a great multilayer game but the experience changes every time you play it therefore making it a great game.
First Wii game I bought. RRR will probably be the second.
While it's easier than I thought it would be (i've beat numerous levels in one attempt), the fact that there's stuff to go back for (3rd pink elebit, etc) and a level editor makes up for it. Not to mention that it's freaking fun.
However, I have had controler issues lately. Wiimote seems to not fully be following my directions.