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*Cemu can launch and play commercial titles, but is at an early stage of development, having little performance optimization, very basic audio emulation, and numerous bugs. But, and little stabilityit can run some games full-speed. It is currently closed source.*Decaf is a research project for Wii U emulation. It is able to boot only one commercial game. That said, it is on track with and only has basic rendering and even some texture implementation. Decaf is open source.