I went through this issue recently with the old Sierra games lineup, DOSbox fixed that, but there park world will NOT run on modern computers and the fixes you find online are just guesses and likely wont work at all...one of the fixes tells you to install the game, then the "patch" and if you accidentally tried to run the game before the patch, you have to uninstall and reinstall it...and I loved theme park world as a kid, the dinosaur and halloween worlds are very much in memory. It's sad when this happens