prosper (PS5)

A user-space PlayStation 5 ? PC compatibility layer. Think Proton/Wine, but for PS5: prosper runs PS5 (Prospero) game binaries on Linux (primary) and Windows (secondary) by reimplementing the console's OS, ABI, and GPU stack on the host — not by emulating a CPU.

?? Experimental research project. It is not a general-purpose game runner yet. Tested retail titles currently reach different milestones and still expose substantial compatibility gaps. See Game compatibility for title-by-title results and known blockers.

Why no CPU emulation?

The PS5 is an x86-64 (AMD Zen 2) machine, so guest game code runs natively on any modern PC. prosper is therefore shaped like Wine, not like an emulator. The engineering is:

Loading Sony's SELF/ELF module format and linking multiple modules into one address space, HLE (high-level emulation) of the PS5 system libraries (libkernel, libc, libSceAgc, libScePad, libSceSaveData, libSceNp, the dialog/IME libraries, …) by thunking to the host's real facilities (libc, pthreads, mmap, futex, Vulkan, …), ABI translation where the guest's FreeBSD/SysV conventions differ from the host, and Graphics translation: PS5 AGC command streams ? Vulkan, including a from-scratch RDNA2 ? SPIR-V shader recompiler and the RDNA2 texture-tiling / block-compression decoders.

Because the PS5 and Steam Deck / AMD Linux machines share the same RDNA2 GPU family, Linux is the natural primary target and the long-term dream is running on that hardware.