Wii U Splatoon sales top one million Great success for new Wii U IP. Worldwide sales for Splatoon have passed one million sales, Nintendo announced. The Wii U third-person paint shooter first launched in Japan on May 28, and followed in North America and Europe a day later on May 29.Watch a new Japanese TV spot below.https://www.youtube.com/watch?v=EoX-CzW32fU