So, my brother somehow screwed up a game.
It's Fire Emblem: Radiant Dawn. He was playing when some error message popped up. It's since mostly not been able to read the disc, though before it did get to the game menu but music was on and off and it eventually stopped working again. Other times it could read, but when you tried to start playing it would just lead to a black screen and you couldn't do anything.
I've tried cleaning the disc and all that, but nothing seems to be working. Anyone had a similar problem and can tell me how to resolve this?
Other games appear to run completely fine btw, so I'm quite sure it's the disc.