I'm completely new to the whole wrapper thing for Mac. Still really confused about the whole thing, but I take it that you somehow install the windows versions of games and then emulate them with a wrapper to run on OS X? I might look into it more, but it looks really really time consuming
Transgaming started it (OSX wrappers) with Cider... as an officially sold way to port Windows games to Macs by just simply running the Windows version... but its all bundled up in a Mac app so it looks and acts like its native. It adds its own libraries to take care of understanding what the Windows software is saying and being able to take care of it on the Mac. Transgaming will not sell or let anyone use Cider except for game companies for official ports.
People started hacking the Cider wrapped games as soon as they were out, getting them to run different games...
Wine (and Codeweavers with Crossover which uses Wine) has started supporting Macs when they switched to Intel processors... so some of us started making Wine based wrappers (Crossover hacks, and pure open source Wine) to try to do the same things... fully self contained Mac .apps with everything in them thats needed for Windows software to run... namely Wine, which some people call am emulator, but its really not unless you want to call it an API emulator... but thats like saying DirectX11 has a DirectX9 emulator in it since its compatible...
Anyways... thats the whole reason I started the
Wineskin project... for anyone to be able to take a Windows app and do an easy wrapped up port if it a lot like Cider. The end result isn't much different than just using Crossover or Wine to run games, but its a total self contained app that works just like a normal Mac app.
Being a "wrapper" thats customized and fixed for a certain game, means people can easily share these wrappers with other people.
If you look at all the wrappers on portingteam.com they are all basically ones you download and put a copy of your own game inside of them, then you have a normal double click and play Mac app... no need to configure the wrapper to work right, or any hacks or patches or anything since the person who made the wrapper *should* have done all that for you, with maybe a few directions on how to get your game in the wrapper correctly.
now actually making a wrapper can get difficult... but I'm working hard to make that easier and easier with Wineskin.