If Hollywood could pull it off it would create a phenomenon bigger than when Star Wars a New Hope came out.
Has to be at least a trilogy. has to contain how Spartan 117 came to be, how he became the last of the Spartans, how the battle was fought on the Halo ring, fought on Earth, including the Forerunners, and of course why the Halo rings were made.
Actually a six part series would be better.
Honestly, I think they’d be fine to mirror the game series. The first Halo game described who/what Master Chief and Cortana are very well, it described what the Halo worlds are and why they are there, established the Covenant and the Flood. I haven’t played “Halo 2”, but “Halo 3” was also well-told and a good cap to the saga. Then follow up with “Halo: Reach” to show how the events unfolded into what happened in the Halo Trilogy.
Of course, the question must be asked—does a movie series even need to be made? The games did such a great job of telling the story, I can’t help but think movies just open up the possibility of ruining the story. I think the same of “God of War” for that matter.
Actually making Halo come to life would be too challenging for Hollywood nowadays. Maybe either Stephen Speilberg or George Lucas when they were younger.