MacCentral - More than a year and a half following the game’s initial release on
the Macintosh, MacSoft has finally released a demo version of Halo, the first person action
game developed by Bungie Studios. The 122MB demo download is available from
Macgamefiles.com.

http://us.rd.yahoo.com/dailynews/rss/tech/*http://news.yahoo.com/news?tmpl=story&u=/mc/20050725/tc_mc/halodemofinallyavailablefordownload

haha thats funny, most poeople have already had their fare share of halo for pc and mac.