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. It was initially released on October 13, 2015 for Microsoft Windows. Typically, the emulator updates once every two to four weeks, with Patreon supporters receiving updates a week before the public release. Though it is still under development, it is able to run certain games smoothly. It was successful at booting and running The Legend of Zelda: Breath of the Wild soon after its release.