Q: Rollercoaster tycoon 2

What are the system requirements?

If your Mac meets the minimum CPU and GPU and other requirements but is a PC/Windows game only then you have to install Windows on your computer using one of these means:

- Use Apple's Boot Camp

How to install Windows using Boot Camp - Apple Support

- Run Windows on top of OSX use a virtual machine app like the free VirtualBox or paid Parallels. Parallels is easier use/setup

For both you have to purchase a license for Windows