PS5 Games Now Boot on Xbox Series X via PS5X Emulator
By @sharedot · · 8 pages
- Gaming
- Emulation
- Xbox
- Playstation
Developers have ported the KytyPS5 emulator to Xbox Series X, running PS5 games in Developer Mode despite limits that keep big titles out of reach.
What happened: PS5X brings PS5 games to Series X
Developer Devran Cosmo Uenal ported the open-source PS5 emulator KytyPS5 to Xbox as PS5X, per Engadget. A YouTube video from September 8 showed him booting the PS5 version of Quake II on a Series X and playing it with an Xbox controller, with three more games working alongside it.
According to Windows Central, the port runs as a UWP app in Xbox Developer Mode, and Uenal has admitted that AI was involved in the work.
Why it works at all: near-identical AMD hardware
The surprise is only possible because Sony and Microsoft built their current consoles from the same recipe: eight Zen 2 CPU cores, RDNA 2 graphics and 16GB of GDDR6 memory.
As Engadget explains, PS5 games are compiled for x86-64, so KytyPS5 behaves less like a hardware emulator and more like a compatibility layer or translator, converting PS5 graphics commands and recompiling shaders for the host.
On Xbox, where Vulkan is not supported in Developer Mode, everything must be translated to DirectX via a Direct3D 12 renderer using Mesa's spirv_to_dxil, Windows Central reports.
The evidence: four playable games, one video
Engadget reports PS5X runs the PS5 versions of GEX Trilogy, Hellboy: Web of Wyrd, Marvel Cosmic Invasion and Quake II, all compatible with Xbox controller inputs, some with working sound; TweakTown estimated Quake II at roughly 25 to 45 FPS in the footage.
Notably, all four are multiplatform releases — no PS5 exclusive has run yet. The project is described as a research effort for running PS5 homebrew and legally obtained game backups, with no firmware or decryption keys included.
The catch: Developer Mode's 5GB memory cap
The limits are steep. According to Engadget, Microsoft caps apps in Developer Mode at 1GB and games at 5GB of memory, versus the 13.5GB a retail Series X game can access — about 37% of normal.
That rules out most current-gen blockbusters, and Microsoft banned emulators from retail mode in 2023.
Windows Central, however, cites the PC version of KytyPS5 reaching over 60 FPS in Demon's Souls and Astro Bot, with Astro Bot sitting around 10 FPS on the Xbox fork, so the underlying technology is progressing quickly.
Stakes and warnings: a curio, plus scam risk
There is no public download yet, and Engadget argues PS5X will remain a cool curio rather than something players can use without a jailbreak.
Scam risk is real: Engadget warns that scammers have released malware under names like PCS5X to mimic the project, while the RPCS3 team reportedly cautions users about fake emulator sites.
Nintendo's Yuzu lawsuit — settled for $2.4 million in 2024 — hangs over any emulation project that brushes against copy protection.
What comes next: PC progress trickles to Xbox
PS5 emulation on PC is becoming more viable by the week; Engadget notes KytyPS5 now goes in-game in a variety of titles, with Marvel's Wolverine reportedly reaching its main menu on an RTX 5090 machine.
Every PC fix must be rebuilt for DirectX and squeezed into the Xbox's smaller memory budget before PS5X benefits. Uenal calls it early days with limited compatibility, so watch for whether any PS5 exclusive becomes playable first.