I use Racer0543 in Mac, it runs very well so far, I like it, especially for some tracks e.g. Small City 2009 and Liberty City. Liberty City looks like New York, maybe I am wrong. Somehow some tracks like Metro, the fence looks pink, maybe it is old version, anyway it is really like some place I used to live in, when I Sim-ride on it, that does remind me of some experience. That is one of my reason to love Racer. Maybe I am talking out of original meaning of Racer, as a Mac user, I don't mind looking at PC-drivers racing excitingly and creating tracks and cars with their intelligence, I like to see Racer community grow. Thanks!