Monday was Master Chief’s day in Hollywood. Messengers outfitted as the kick-ass space marine from Microsoft vidgame “Halo” hit the studios Monday with a screenplay based on the bestselling franchise. The script is by “28 Days Later” writer Alex Garland, who was paid $1 million by the software giant to pen an adaptation that meets the approval of its execs and the game’s creators at subsidiary Bungie Studios. According to numerous studio people, sources, Microsoft and its reps at CAA are seeking an advance of $10 million against 15% of the gross and strict control of development. The winning studio would have to follow a “bible” created by game developers to make sure any changes to the script don’t alter the universe established in the first two “Halo” games that will continue in future sequels for the Xbox. Microsoft was apparently looking for a very quick response from studios, possibly as soon as late Monday.