With the Porting Kit, you can install Windows softwares in your Mac. Since Porting Kit uses Wineskin, which is based in Wine technology, a compatibility layer is used to run the desired apps, which means that they run like native apps.
I've already mentioned it's a free app? You can use the app without paying anything at all! You just need an original copy of the game that you want to install and you are ready to go.