To be clear, there's no indication (yet) that these game files are actually still hidden somewhere on the PlayStation Classic itself. But the extant references in the emulator's source code ...

For example, the threat actor leaked a GTA 6 source code file today that is 9,500 lines long and appears to be related to executing scripts for various in-game actions. Claims to be behind Uber attack ...

Grand Theft Auto V’s entire source code has been leaked, alongside other information such as GTA 6’s Python code, all files of the cancelled Bully 2 game, and more. The leak has also revealed ...