It was more a question of when than if: Wii sales leaping past Xbox 360’s in the U.S . The Wii has formally breached Xbox 360’s bastion by going past its US sales tally, according to the latest data from NPD. Wii is now the best-selling console in the U.S also. The month of June proved to be quite fecund for the Wii, as the headcount of US Wii owners rose by 666,000 in this month. Nintendo has sold 10.9 million units of its popular 7th generation console in the States. The month of June was great for the US videogame industry as a whole. The PS3 saw a massive increase of 94% in sales compared to the preceding month and also trounced the Xbox 360 to finish second.