:OO
It's a Wii Game you get with Wii Points. All of the pokemon are toys, and you go in different scenery like forests and caves to get them all. There are bosses for each level, and there are ranks. You can change the pokemon you play as at anytime, and you can change it's moves, play multiplayer, etc. The pokemon's power will tell you how strong they are.
(more info is
here)