I have been playing the game for a few days now and I must say it's fun! Of course it's a game made with kids in mind, but as an adult you can also enjoy it as you need to be very inventive to pass certain levels.
My only remark is dat my hand really hurt after playing this game for a while as using the marker uses the remote and since it's very tiring to keep your arm extended the whole time, you do get a bit of a cramped up hand after a while since there isn't really a confortable way of playing (if you've got a suggestion, please post it here).
You need a nunchuck to play this game.