Grover C. Magnus 
“We did a lot of TV commercials and live trailers, which was really good to help distill a Halo message, but the reach and scale of this TV series is exponentially greater,” says Wolfkill. “In terms of working with creative teams, we learned a lot from those two previous ones, but in terms of scope, it’s very broad, and it’s new.”
Length is a major difference between those earlier efforts and this TV series, but the show’s place in Halo cannon. The TV series takes place in “the Silver timeline”, outside of the established continuity in the games. It’s basically a permission slip for the show to tell stories with familiar characters without getting bogged down in video game lore.
“Early on, it was clear that in order to let the story evolve and develop as it needed to, in order to truly deepen these character arcs, we would need to make some changes,” Wolfkill said. “Sometimes it was even just a shift in perspective. Sometimes it was something you just didn’t see in the game or even in the books. We knew we had to let the story breathe through it. -same.
This means being true to the central message of the characters, storylines, and world-building, but not necessarily telling the events in the same order. For example, the Fall of Reach, a major battle that directly defines how the heroes discover the titular Halo ring, takes place before the original game, but it hasn’t happened yet in the series when we meet Master Chief. for the first time.
“At the end of the day, it all comes down to being able to make moment-to-moment decisions,” says Wolfkill. “Every day there were decisions to be made: are we doing something exactly the way it was done in the game or are there good reasons to do it differently? And, if so, how can we stay true to the spirit of Halo while retaining the voice of all these amazing creators?
It’s no secret that this is a risky approach. Diverting from the established formula or canon will please some fans but could alienate many others. Just look at the outrage when Halo 5: Guardians turned Cortana into a villain, or when Halo 2 introduces an unexpected new main character. Gamers, and fans in general, tend to resent change. Corn Halo Showrunner Steven Kane believes the new medium will ultimately justify the upcoming changes.
