u can play ps3 and psx games without anything extra. the swap discs were for ps2 use. I still own them actually. the ps2 emulator works well enough, but not all games work. if there's a certain game u want to work, check the list. it works remarkably well though considering this is supposed to be for certain games that were optimized by sony. retroarch has some issues, but it has issues on every console. I've not tested it much except for on the vita. I did test the genesis, retroarch emulator on the ps3 under my other name, pinky. it worked fine from what I saw. I can say that the ps3 is left hanging when it comes to retroarch since it's difficult to debug issues on the system. that's the reason for late releases or no release at all. the head dev for it on the ps3, perhaps other systems, is on psx-place btw if u need information.