The concept is old. Very old. The three games that you can play have all been done before, with no change, aside from characters. The instructions as well are quite confusing, leaving a lot to guesswork and knowledge of previous games. It would be a good idea to add more games, as I'm sure there are tons of sports that can be done.
The layout and feel of the game is decent enough, with the background music matching the mood quite well. It does get monotonous, but the simplicity gives it a good effect. The animals and props are drawn quite well, actually, and it seems like it would be a fun game for little children.
This game utilizes loading between screens. While this seems to be a good idea, as it saves you from loading parts of the game that you won't even play, the loading times are unusually long, specially for this size. If you must include loading screens, at least make it productive. A detailed instruction for each sport could be shown while loading, as to make it less frustrating.
Lastly, I don't know if it's just me, but the back button doesn't work.