This is a puzzle from about 25 years ago, which came with a CD. I still have the CD and a computer that can run it, but I get errors when I try to play it. It's become unusable on my current computer. I haven't used the puzzle itself in a long time, and I no longer need it. Since it's from 25 years ago, there might be some differences from current materials, which could be great as educational material for children. I also recommend it to people who enjoy geography.