Halo Infinite is one game, but there are actually multiple titles split up on the Microsoft Store. You need to first ensure you download the full game, which can be done by following the instructions below. Typically with a pre-release Game Pass title, you only download a small placeholder file, and in our experience this is what you're likely to receive on Xbox. Please note that you might have issues triggering the full Halo Infinite download.
How To Download Halo Infinite Multiplayer Xbox consoles If you're looking to get into a few matches and start blasting Spartans, here's how to download the Halo Infinite multiplayer mode and get playing Slayer. In fact, it launched right away, several weeks before the full game's December 8 date.
At the conclusion of its celebratory 20th anniversary presentation, Xbox revealed that Halo Infinite's multiplayer mode would be launching early.