Prototypes and Beta versions that we can find on market for ps1

[Jponx Renan]

Hi. Does anyone know any prototypes and beta games for ps1, that we can find on market, as official releaseses or factory pressed versions? Almost all versions I find, are CD-R based builds....

 

[psx-collector]

Do you mean non-final builds on old pirate discs?

Biohazard 2 (Leon disc only)
Silent Hill
Croc (If I remember correctly)

Some more...

If you mean betas on the official black pressed discs then maybe some PAL white labels. All the magazines had PS1 Debugging Station so it wasn't necessary to load existing pressing plants with additional disc pressings. All this stuff was "make review and drop to trash bin".