I'm not really what you would call a "Gamer". I have a PS3 and some driving games, but mainly it's for my kids.
This game, however, has changed that.
Gameplay aside, this is really beautiful just to watch. The homely cardboard and stitched material world you live in is so realistic you're actually surprised when the graphics don't work EXACTLY right.
Having said that, the physics of this world are spot-on. It's just another part of what makes this look so real.
Overall it's a really slick product. The numerous instructional videos and voiceovers by Stephen Fry are both helpful and humerous, providing a personal feel you just don't get with other games when they talk.
Gameplay is consistently entertaining. Even the simplest of tasks, such as jumping on a skateboard and rolling down a slope, can be exciting and varied time and time again. Hook up 3 or 4 controllers and you've a gaggle of sackmen all clambering about changing the balance of the board.
Some of the levels atually require 2 or 3 people to perform certain tasks. Although not essential, multiplayer mode adds another dimension to an already brilliant game.
In short, you'll not be disappointed with this game. Sure, it's a platform game at heart, but the realism and depth of detail elevate it far beyond this. Remember "The Incredible Machine"?. It's got elements of that as well. A real family game that I'm sure will appeal to a very wide audience. If I could give it 6 stars, I would.