Step into PokéPark and play as Pikachu, Oshawott, Snivy, and Tepig to rescue the missing Pokémon in PokéPark™ 2: Wonders Beyond for the Wii™ console! Pikachu will need the help of his Pals and their unique abilities to make it through PokéPark and discover the secrets of a mysterious new world called Wish Park. You’ll meet and befriend many Pokémon from the Unova region and beyond who will help you during your adventure. Experience lots of fun activities, minigames, battles, Attractions, and more on your quest! Clear an Attraction by yourself, and then challenge your family and friends—up to four* people can play Multiplayer Attractions together!

Source: http://www.pokemon.com/us/games/videogame-pokepark-2-wonders-beyond/">pokemon.com (only available through web.archive.org)