Take a look at what has got to be one of the most unique "future-sporting" games around. Daydream Software's Clusterball, "the online ballgame," (not released just yet) is a Mac/PC on-line game in which you pilot a zippy little flying craft, collect balls fom tracks dispersed across the landscape, and fly through a ring in the arena to score. It looks extremely addictive and the OpenGL graphics are stunning. Well, see for yourself--there's lots of screenshots and QuickTime movies on their site.
It's good to see so many new Mac/PC on-line games emerging--gives us a chance to school those Intel-using weenies real horror show.
Happy gaming!