I am still amazed on how games for the xbox 360 still fit on a regular DVD-9. Especially open world games like Far Cry 2, GTA 4 and recently Fallout 3, that looks so good and runs really well for being console games. I know the PS3 has blue0ray and the capacity to fit those games in the disk, but how do they fit so much on a DVD-9 for supposedly being last gen technology. I know the programmers use various amounts of compression technology, but how do they do it and eventually would they need to upgrade discs?