He and his company, Sora Ltd. alongside Nintendo, started a first-party studio, Project Sora, which was 72% owned by Nintendo and 28% owned by Sora Ltd. It was revealed at E3 2010 that Sakurai and Project Sora were working on Kid Icarus: Uprising for the Nintendo 3DS. Project Sora was closed and ended development on June 30, 2012.[5] At E3 2011, Nintendo announced that Sakurai was working on Super Smash Bros. for Nintendo 3DS and Wii U. Sakurai began development of the title upon the release of Kid Icarus: Uprising in March 2012.[6]