Prototypes come on all sorts of media. From carts, to chips, on hardrives, and of course, on CDs and DVDs. These two disks are of the PS2 and Xbox builds of Star Wars Battlefront II. They are likely review disks used by a certain cheats media company, which has since gone out of business. Lucasarts seems to print directly to the disk or onto the label, resulting in what you see below. Sorry for the lower quality, my 5d2’s battery is charging.