MacSoft has released a downloadable demo of Halo, its epic adventure game, reports MacCentral. “The demo version gives players a taste of both single and multiplayer gameplay, with some limited vehicle combat,” notes the report. “The single player campaign level included is called ‘The Silent Cartographer,’ while the multiplayer map is called ‘Blood Gulch and supports up to 16 human opponents. The demo version is Mac to Mac only and you can’t save your progress.” The Halo demo requires Mac OS X 10.2.8 or later and weighs in at 122MB.