I didn't know that PearPc was illegal, because it's a free software, and unless you obtain Mac osx illegally then it would be illegal. Also I didn't recommend the OP to use PearPc I just told him that's the cloesest thing to run Mac osx on the PC.
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I think that's the closest you can get to running a Mac OS on a PC, I haven't tried it so I don't know how it works. The best advice from me is getting a Mac and use boot camp to play windows games.