This game is a cross between TIM (The Incredible Machine) and a cheap paint package, the latter art/design aspect being a little disappointing. You have a number of tools that can be used to decorate and embellish a number of 3D models, each with its own theme, e.g. ancient temple, theme park, space station. These tools vary greatly in their usefulness and appeal. Some are quite fun, and one of my daughters actually quite likes the decorating aspect of the game. I found that it can get tedious, particularly when you are forced to use all of the tools in order to unlock additional features and levels.
The game feels as though it would be better with a mouse than a Wii remote and nunchuk. Mastering zooming in and out is essential because the Wii remote is not fantastic as a pointing device. This zooming aspect is not explained at all well in either the manual or the tutorials (you need to use the C button on the nunchuk to zoom in to where the Wii remote is pointing, then zoom in further, then zoom out - but only if you point at the centre of the screen). The white text can also be quite difficult to read.
However, once you have mastered the controls, the puzzle solving aspect of the game is quite addictive (if you have played TIM then you will know what to expect). These puzzle challenges all take place in the scene that you have just decorated. The best thing about this game is that there are often hundreds of original ways of solving the puzzles by placing objects at strategic locations on the screen. A subtle move in the object's position can completely change the outcome. There is no time limit, and no penalty for getting it wrong (although it took me a while to realise that in contraption challenges you must use as few objects as possible). Just add, move or delete an object and try again. Brighter children (8-10 and up) will enjoy being creative in solving these challenges. Some are really quite hard, so patience is required. This makes success all the more rewarding.