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Inside the Halo Universe
- November 9: The book, The Castaway Theory by Dr. Jonas Volman is released.
Real World Events
- Halo: Custom Edition is released.
- Bungie officially confirms the development of the Halo film.
- October: The Halo 2 Cinematic Trailer is released.
- November 9: Halo 2 is released in the US and Canada.
- November 11: Halo 2 is released in Europe.