GameJackal is a product that has been designed to remove the need of having to always use your CD/DVD to play your games. I can here the cry going up "Have you never heard of Virtual Drives". Well yes I have. The difference here though is about 700mb of disk space. GameJackal make a small profile, as small as 30kb up to 40mb which it uses to run the game instead of using the entire image like a virtual drive does.