Ryujinx is an open-source Nintendo Switch emulator created by gdkchan and written in C#. Ryujinx is an open source Nintendo Switch emulator written in C# for Windows, Linux and OSX. This Guide shows you all the steps and settings for the Best possible performance and Game. The Ryujinx emulator is a Nintendo Switch emulator with a lot of potential. Ryujinx is an experimental, public domain Nintendo Switch emulator/debugger written in C#, unlike most emulators that are created with C++ or C.