The game's been dubbed the Xbox 360's LittleBigPlanet - although comparisons seem a little unfair - and has been designed to be accessible for children and enjoyed by anyone.
The XBL Marketplace blurb states: "The visual programming environment allows rapid design iteration using only a game controller for input. Share your creations with friends over Xbox LIVE."
Looks like it could be worth your 400 MS Points.
Having shipped last night, Kodu is now available for purchase after two and half years, when the game was first conceived. There are already countless player-made levels more "sophistocated" than what the dev team could dream up, apparently.
So there shouldn't be any worry about lack of content, for those more interested in playing than creating. First, make sure you've got 400 Microsoft Points to spare.
The Xbox LIVE Marketplace description states: "The visual programming environment allows rapid design iteration using only a game controller for input. Share your creations with friends over Xbox LIVE."
It should be noted that Kodu has been experiencing problems with purchase links online, so you may want to buy through your console for the time being. Just to be on the safe side.