Is there a way for making PC games play on Apple computers

Games will require a particular operating system to work. If the game is written for the Windows operating system then it will need Windows to be installed on the Mac for it to work. Specific Mac games are written for Mac OS X and will be labelled as such. That said it is possible to play some Windows games on a Mac without having Windows installed using CrossOver Games (See links below) which emulates the parts of Windows needed to play the game. This does not work for all games and may not work well for some games.