We had a backwards compatible ps3 and I was incredibly sad when I discovered I couldn’t play Um Jammer Lammy on it, something in the software fucked up the timing and you just couldn’t press the buttons at the correct time and it sucked
We gave away the ps3 at some point but I still have Um Jammer Lammy. I’ve considered buying a ps2 for it but haven’t bothered so far. The disc is probably in horrible shape by now anyway, it’s just semi sentimental so I keep it.