2004 (real world)

2004 is the year Halo 2 was released.

Unknown

 * Bungie officially confirms the development of the Halo film.

January
January
 * Microsoft conducts an internal Alpha test of Halo 2 ' s multiplayer to test the performance of the network architecture over Xbox LIVE.

March
March 15
 * Halo Custom Edition is released.

April
April 27
 * Microsoft purchases the domain names "halo2.com" and "halo3.com". "halo3.com" was initially held under the name "Trout & Zimmer" until switching over to Microsoft Corporation after Halo 3's formal announcement.

May
May 10–13 May 11
 * A multiplayer demo is showcased at E3 2004.
 * halo2.com goes live.

October
October October 15
 * The Halo 2 theatrical trailer is released.
 * halo2.com is relaunched with a Covenant theme by AKQA.

November
November 4 November 9 November 11 November 17
 * Halopedia was created and thus began many years of editing and community.
 * Halo 2 was released in the US and Canada.
 * The Art of Halo was released.
 * Halo 2: The Official Strategy Guide was released.
 * Halo 2 is released in Europe.
 * Halo 2 Auto-Update 1 is released.