You'd like Baseball Boss as well then. It combines card trading (real players, MLB licensed) and then playing those cards on teams. Great stats and tons of fun.

For disks which only have minor scratches, rub a plain wax candle all over the surface, radially. Once covered, buff it with a smooth cloth (I usually use my cotton T-shirt). The wax fills the scratches well enough to read them, usually. If this doesn't work, try the toothpaste trick but the wax trick is non-destructive.