i just installed halo on my imac g3 indigo (http://www.everymac.com/systems/apple/imac/stats/imac_350_indigo.html) for the fun of it, and it runs! the details are terrible, but good enough to tell a human from a covenant. the frame rate, at the lowest possible level, and having it formed in a window, rather than full screen, i get about 30 frames a sec! seriously! just hold p when you start halo up and you can run it on anything! the vid card on my imac has about 8 megs, and it runs! i have 128 megs of ram installed with 10.3, later on, i'll get screen shots... This is NO JOKE!