User blog comment:RadSpyro/Dreamcast Cheats not working?/@comment-24192566-20141216003352/@comment-24192566-20141222224957

Not sure about the disc. I've had multiple and I was using each of them by the time I reach the final boss. Maybe it could be the programming in general. I'm not sure. But as far as I know, it won't let me complete the game no matter what I do.