Microsoft officially announced Halo 3 during the E3 conference, generating significant excitement for the upcoming installment in the Halo franchise.
Microsoft revealed the official release date for Halo 3, setting the launch for September 25, 2007.
Halo 3 was released worldwide, becoming one of the most successful game launches on the Xbox 360, with record-breaking sales and critical acclaim.
Within the first 24 hours, Halo 3 sold over 3 million copies in the United States alone, becoming the fastest-selling game at the time.
The public beta for Halo 3 multiplayer was launched, allowing players to test multiplayer features and provide feedback before full release.
Various gaming media outlets published detailed walkthroughs and guides for Halo 3's single-player campaign, assisting players in completing the game.
Master Chief is returned to Earth aboard the Pelican after being in cryo-sleep.
Master Chief, along with the Arbiter and a team of ODSTs, assaults the Ark to stop the Prophet of Truth from activating the Halo Array.
Master Chief disables the firing of the Halo Array by destroying the control mechanism on the Ark.
Master Chief destroys the portal to prevent the Flood from escaping the Ark.
Master Chief and Cortana escape the Ark with a fighter as it is destroyed, drifting in space together.
