Bungie went from (relatively) unknown Mac-only game shop (during the Marathon days). They were then bought by MS and made the headline games for the xbox line.
Marathon was relatively successful I thought. I was a PC-loving Doom guy that hated Macs at the time (a bit of a waste of energy, but I was 13), and I remember at annoyed I was that people described Marathon on the Mac as being better thn Doom.
