Infinite must be offline.

When co-op does launch the plan, at least as of now, is to feature four player co-op through the game's open world campaign including cross platform play.

343 had said campaign co-op would hit the shooter during Season 2 at the earliest, which players had understood to mean about three months after launch.

The showcase didn't feature any gameplay footage of the campaign's new-and-improved graphics, disappointingly. It did feature a campaign cinematic, however, that provides a tantalizing tease of Halo Infinite's story. In the cinematic, we meet a new AI that will be assisting the Master Chief during his adventure. Halo 5 players will remember that series mainstay Cortana went crazy and turned evil in that game, so a replacement was probably in order. Boy, 343 did Cortana dirty.