This is fnalibs, an archive containing the native libraries used by FNA. These are the folders included: - x86: 32-bit Windows - x64: 64-bit Windows - lib64: Linux (64-bit only) - osx: macOS (64-bit only) The library dependency list is as follows: - SDL2, used as the platform layer - MojoShader, used in the Graphics namespace - FAudio, used in the Audio/Media namespaces - SDL2_image, only used for Texture2D.FromStream and Texture2D.SaveAsPng/Jpeg - libtheorafile, only used for VideoPlayer