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) - libaarch64: Linux (64-bit ARM only) - osx: macOS (64-bit only) - vulkan: MoltenVK ICD for macOS - Place this at Game.app/Contents/Resources/vulkan/ The library dependency list is as follows: - SDL2, used as the platform layer - FNA3D, used in the Graphics namespace - FAudio, used in the Audio/Media namespaces - libtheorafile, only used for VideoPlayer For x86_64 Linux, the minimum OS requirement is glibc 2.28. For aarch64 Linux, the minimum OS requirement is glibc 2.34.