aka Super Pokemon Rumble
Pikachu is your starter, but you pick up other Pokemon pretty quickly. In the first level Beginner's Park, you can get Snivy, Tepig, Oshawott, Pansage, Pansear, Panpour and Victini!
i believe it to be a pickachu but im only going on this http://www.youtube.com/watch?v=ta2y2ktDjgA&feature=results_video&playnext=1&list=PL9B541202CEA9A610
Pikachu would be your starter for it and you get a lot of Pokemon on the way. You also get very soon have fun!