Cemu is a closed-source Wii U video game console emulator developed by Exzap who serves as the core and GPU developer, and Petergov as the core and audio emulation developer.[2] It was initially released on October 13, 2015 for Microsoft Windows.[1][3][4] Typically, the emulator updates once every two to four weeks, with Patreon supporters receiving updates a week before the public release.[5] Though it is still under development, it is able to run certain games smoothly.[6][7] It was successful at booting and running The Legend of Zelda: Breath of the Wild soon after its release.