The commecial version does indeed cost money, but it works with a lot more games than regular Wine and includes software called Point 2 Play that makes installing super easy. It really is worth the cost. I have installed several games like Sim City 4, Max Payne 1 & 2, Warcraft III, and they all work great. Keep in mind that emulation software isn't as efficient as running games natively, so some games will run slower than they do on Windows with the same hardware. One example is Battlefield 1942.