- last post: 01.01.0001 12:00 AM PDT
Windows XP = an OS. OS = Operating System. Vista is Microsoft's newest OS coming out early next year. By releasing Halo 2 on Vista, Microsoft will coax more gamers to switch over to Vista.
You can take a cynical view on this if you want. By making Halo 2 PC exclusively for Vista and making DirectX 10 exclusive to Vista - you get the idea. Halo 2 is just one cog in M$'s great wheel of money-sapping.
Or you could take a more or less positive view. You could say that Bungie and/or M$ actually want to have Halo 2 PC look and play great, and they feel that it can best be accomplished in Vista on DX10.
The latter assumes Microsoft has a soul, however :P