Yes, u can play window based games like WC3 for example. The performance would be much better as you expected but if you are a heavy gamer and insist to get mac. go for macbook pro. screen is definitely bigger and the performance is far more better than MB. anyway. I think what ppl say is true, once you have shifted to mac, u will never go back. erm. the reason is mac os x has a very beautiful interface and the OS graphic is better compare to windows.