Jailbroken PS5 consoles can now run original Xbox games with XPSemu Alpha 1
The PlayStation 5 homebrew scene has taken a surprising step forward: a jailbroken PS5 can now run games from Microsoft’s original Xbox console. The breakthrough comes through XPSemu, a native PS5 port of the open-source xemu emulator, which has now reached its first public Alpha 1 release.
Created by developer ZiZc3, XPSemu is already capable of booting several well-known original Xbox titles, including Halo 2, Forza Motorsport, Fable: The Lost Chapters, and Crash Bandicoot: The Wrath of Cortex. While performance varies depending on the game, the early results show real promise for original Xbox emulation on PlayStation 5 hardware.
Unlike some emulator projects that rely on wrappers or compatibility layers, XPSemu runs as a native PS5 application. It is based on xemu, the popular open-source original Xbox emulator for PC, but adapted specifically for Sony’s current-generation console. The emulator uses QEMU’s TCG just-in-time compiler to translate the original Xbox CPU code, while graphics are handled through xemu’s Vulkan renderer.
On PS5, that Vulkan rendering path runs through RADV, Mesa’s open-source AMD Vulkan driver, made possible by the PS5_Vulkan project. In simple terms, the PS5 is now capable of translating original Xbox games in real time and displaying them using a modern graphics pipeline.
Halo 2 is one of the standout titles in the first XPSemu Alpha build. According to the developer’s testing, the game runs at around 30 frames per second without any modification. When a community-made 60 fps patch is applied, Halo 2 reaches between 51 and 60 fps during the opening sequence and typically lands between 36 and 50 fps during actual gameplay.
That makes Halo 2 one of the more playable games in the current build, especially considering this is still an early alpha release. For fans of Xbox history, seeing one of Microsoft’s most iconic shooters running on a PlayStation 5 is an unusual but fascinating milestone.
Other games show more mixed performance. Forza Motorsport can hold its 30 fps cap in menus, but performance drops during races, often landing between 15 and 21 fps. Fable: The Lost Chapters performs better in less demanding areas, running between 22 and 30 fps in many scenes, but can fall to 10 to 20 fps when the game becomes more intensive. Crash Bandicoot: The Wrath of Cortex is listed as running smoothly in current testing.
The main performance bottleneck is not the PS5’s graphics hardware. Instead, the emulated original Xbox CPU is doing most of the heavy lifting. Project documentation notes that the Xbox CPU emulation thread can occupy 85 to 97 percent of its assigned PS5 thread, while the GPU remains mostly idle.
This means the limitation is largely tied to processor translation rather than graphics rendering. The PS5’s Zen 2 CPU cores run at up to 3.5GHz, which is powerful for a console but still behind high-end desktop CPUs in single-core performance. Since emulation often depends heavily on single-threaded CPU speed, this becomes a major factor.
Interestingly, because the GPU is not being pushed hard, increasing the internal rendering resolution has little impact on frame rate. XPSemu can raise games from the original Xbox’s native 480p resolution up to 4x resolution with almost no performance loss in many cases. That could make supported titles look much sharper than they did on original hardware.
The developer has already made meaningful progress through optimization work. Earlier PS5 builds reportedly ran the opening of Fable at around 7 fps, while the current Alpha 1 build can reach roughly 23 to 30 fps in the same area. That improvement suggests there is still plenty of room for future performance gains.
XPSemu also includes a custom dashboard designed with the PlayStation 5 and DualSense controller in mind. The interface takes inspiration from the original Xbox experience while adding modern conveniences. Users can browse games through a cover-art carousel, view recently played titles, and track play time on a per-game basis.
The emulator also supports individual settings for each game, including resolution, display options, and audio configuration. Another useful feature is support for Jay’s Magic Patch format, allowing patches to be applied in memory when a game loads. This means the original game image remains untouched.
For players who like to monitor performance, XPSemu includes an overlay showing frame rate, frame time, and CPU load. That should help testers and enthusiasts better understand how each game behaves on PS5 hardware.
Running XPSemu is not as simple as downloading an app on a standard console. It requires a jailbroken PS5 capable of loading homebrew applications. Users also need a companion daemon called XPSemu Tools, which runs alongside the kstuff payload.
The emulator does not include any Microsoft-owned software or games. Users must provide their own Xbox BIOS, MCPX boot ROM, and hard-disk image, all dumped from original hardware. Games must also be stored on the PS5’s internal storage as XISO images, since XPSemu cannot boot original Xbox discs directly.
The Alpha 1 release also comes with several limitations. The emulated Xbox is currently locked to 64MB of memory. Audio DSP emulation is recommended to be turned off because it can cause major slowdowns in games such as Halo 2 and Forza Motorsport. Save states are not supported yet, and resolution changes only apply between games rather than instantly during gameplay.
Even with those restrictions, XPSemu is an impressive early release. The project roadmap includes more CPU optimizations, a save manager, and optional frame generation through an open-source Vulkan port of AMD’s FSR 3. The goal of that feature would be to make 30 fps games appear smoother by presenting them at 60 fps.
For now, XPSemu is clearly aimed at advanced users in the PS5 homebrew community. It requires a jailbroken console, legally obtained system files, and compatible game images. Still, the fact that original Xbox games are now running natively on PlayStation 5 hardware is a major moment for console emulation enthusiasts.
If development continues at this pace, XPSemu could become one of the most interesting PS5 homebrew projects to watch, especially for players who want to revisit classics like Halo 2, Fable, Forza Motorsport, and other original Xbox favorites on modern hardware.
