A developer known as Sword has created a native emulator port that allows jailbroken PlayStation 5 consoles to run PlayStation 2 games directly from physical discs, bringing a form of backwards compatibility that Sony has not officially provided.
The emulator, called PS5SX2, functions similarly to Xbox's backwards compatibility system. When a PS2 disc is inserted, the emulator copies the data to the console's storage before launching the game locally. The solution also supports external USB optical drives for users whose PS5 disc drives are broken or unavailable.
PS5SX2 is compatible with discs from any region and supports common PS2 image formats including ISO, CHD, CSO, and ZSO files. However, one limitation exists: the PS5's optical drive cannot read CDs, so CD-based PS2 games will not function through the built-in drive. This is a hardware constraint rather than a software limitation.
Beyond basic compatibility, the emulator includes numerous enhancements. Games can be upscaled to 6x resolution for 4K output, with options for post-processing filters, widescreen support, and 60fps patches for compatible titles. The emulator also enables online multiplayer through community-operated servers using an emulated network adapter.
The project extends beyond PS2 support. Sword has indicated that PlayStation 3 disc compatibility is in development through a PS5 port of the RPCS3 emulator. Currently, PS3 games on PS5 require cloud streaming through PlayStation Plus Premium, which has been criticized for reliability issues. Native PS3 disc support would provide a more direct alternative.
According to another homebrew developer, Al Azif, the disc identification systems built into PS4 and PS5 were specifically designed to recognize PS1, PS2, and PS3 games, suggesting some foundational infrastructure already exists for this functionality. While Sony has gradually added PS2 and PSP titles to its PlayStation Plus Classics Catalog, these emulation projects demonstrate the potential for broader physical disc support without requiring users to repurchase games they already own.
