Hello you got a game that you bought and then it's Only supported for windows fear not there's an Mac app called wineskin winery. In this Instructable I'll teach you how to port a game using this application, I'm gonna use Skitch for most of the images for this so I don't have to write what to do.
Step 1: Now Pick a Game That You Wanna Port on Wineskin
Step 2: Downloading the App
Step 3: Using Wineskin Winery
Step 4: Installing a Wine Engine
Step 5: Create a Wrapper
Step 6: Once Created Open the Empty Wrapper
Once you create the wrapper Wine may display that didn't find the gecko HTML engine or whatever it is just install it. it will help the Help screen a lot since it uses HTML based coding on the game you're importing as a Wineskin Wrapper. When the Wrapper creation is done it will tell you it's ready in /users/your username/applications/wineskin
Then when you're at the wineskin app we'll need to install some Winetricks (that will be in the next step)
(In most times you may need Gecko Html for the help files which it's powered by Html so the engine will help it if you're having trouble with the game.)
Step 7: WineTricks? What Is a Winetrick?
To Install Winetricks you'll need to click on Advanced and then goto the tools section (Refer to picture for this) Then click on Winetricks button and you'll see a window to install winetricks.
Step 8: Configuring Your Wrapper
EXE Flags - what command line keywords that needs to run like -windowed (for window mode) and so on
Version - what is the version of your wrapper? (I prefer you use the version number of the game's release for this)
Menubar name - It will display the name of the App in the application menu
icon - A picture of your .icns icon for the wrapper
Once you're happy with the configuration you may install the game or make it have a wine desktop or not that's in the Screen options (refer to picture)
Step 9: Installing the Game
If an installer installs any shortcut or other junk on the desktop you may remove them since these won't work like those shortcuts which are .ink files.
Step 10: Done and Ready to Play.
Here's Monopoly Casino running in a wineskin wrapper.
This is a screenshot of Lights out Slot machine.
Step 11: Bonus: Referring to WineHQ's App Database
The Database can be helpful when you're trying to port and run the game so it runs as a native Mac app.
http://appdb.winehq.org/objectManager.php?sClass=version&iId=246 - This is for an example.
When Referring to this Database it will help you along and run many games you have laying around BUT you need to experiment with the game if it's NOT in the database like Monopoly Casino to NASCAR Racing 3 (for which I can't run for some reason)