Arzest Corporation (Japanese: 株式会社アーゼスト, Hepburn: Kabushiki gaisha Āzesuto) is a Japanese video game developer formed on June 25, 2010 by Naoto Ohshima (of Sonic the Hedgehog fame), Yoji Ishii, and key members of their previous studio, Artoon, and based in Yokohama. Its name is a portmanteau of the words "art" and "zest".