Originally Posted by NeueZiel
just from the past we know that initial releases of new OS are glitchy and buggy etc... So why release a game exclusively for a new OS..
Originally Posted by VulcanDragon
To spark sales of Vista, nothing more. It is a common statement in the industry trade rags that Microsoft is going to have a hard time convincing users that they need to upgrade to Vista because, as you say, XP already does pretty much everything we need and more. There is absolutely no reason for a home user to upgrade to Vista, none. So Microsoft has to create a reason: software you want is only available on Vista!
No one should upgrade to Vista to get Halo 2, of course. You can get an XBox and Halo 2 for less than the Vista software will cost, not to mention the hardware upgrade you probably need. Best to wait until you buy/build a new PC to move to Vista, I say. That's my plan, anyway.