Without voices...
That is the sole place you seem to suffer with the game at all. Personally, I love the fact that you've rolled all of these mini-games into a collection and even given them a theme. A great way to present the whole package.
As I mentioned before, the characters could ahve done with voices, but this minor defect is made up for with the winning style of the actual games themselves and the plotline (superbly written and hilarious in places)
The characters are simple and effective, leaving us with a user-friendly game which, while not particularly addictive is a great example of a great game.