Pushmo was first launched in 2011 as a Nintendo 3DS release in North America, Europe and Japan. A sequel was launched one year later called Crashmo for 3DS platforms.
Pushmo World is slated for release on June 19 in Japan for 1,000 yen. We've reached out to Nintendo regarding a possible North American release for the Wii U game and will update when more information is available.
Update: Pushmo World is coming to the North American Wii U eShop for $9.99.