It does! Halo was a great game (wasn't it released for mac as well?), Halo 2 was ported so badly it was practically unplayable (oh, wait, and you needed 'Vista' for extra graphics support - although it ran better on xp once cracked).I still think you cant play Halo properly on a damn CONTROLLER on the Xbox. It smells ridiculous.
It was such a fail that after this no games for Windows were released...
Halo remains an xbox phenomenon however.