It does run, however when large battles commence, it becomes a choppy mess, and I can't even find my cursor, let alone move it accurately. Fan-made maps like Between the Worlds, or DOTA, get horribly choppy, although it seems to run better in osx than in os9. Still, the graphic performance is NOT what it should be considering the hardware I have. And let me save you the trouble, all of my hardware is working perfectly fine. In fact I had my HD and mb replaced just a few months ago, everything is running perfect.