Real World Events
- June 4: The Halo 4 E3 2012 Demo was showcased during the E3 2012.
- September 26: Halo 4 went gold.
- October 2: Halo: The Thursday War, the second book in the Kilo-Five Trilogy, was released.
- October 5: Halo 4: Forward Unto Dawn was released.
- October 31: Halo 4: King of the Hill was released.
- November: McFarlane Toys released their second wave of the first series of Halo 4 action figures.
- November 6: