If you really have to, Bootcamp. Ive played Crpg a couple of times on a iMac. Works fine. If you have that crappy Macbook Air(which is quite pretty and light, il give it that), than forget it. I once tried Minecraft on the Macbook Air and the damn thing was louder than a washingmachine and was close to turning into overpriced lava in my hands after just 3 minutes.