How come my PS Grand Theft Autos arent working in my PS?

Question

How come my PS Grand Theft Autos arent working in my PS?
Yes, i the compatibility doesnt work with every game in the PS GB model but i checked the compatibility list and it said that all the GTAs I have should work but none of them do, also it said Gran Turismo should work and that doesnt either.

Answer

Because you must have the Gb usb slot version, if so then none of your games will work because it is not backwards compatible sorry, but if you have the gb with usb slots then that one is backwards compatible, if you do have the usb slot version then your ps is not working properly, either that or you are a very careless person and all of those games are scratched, hope i helped.