The game was revealed to the world at the Microsoft press conference at Grauman's Chinese Theater, in Hollywood, CA. By the time you read this, the announcement trailer should be available for download on bungie.net and directly to your Xbox 360, in full HD glory from Xbox Live Marketplace. View no further if you want to avoid spoilers.

When downloaded from XBLM, the following text accompanies the trailer:

"With its defensive forces, all but obliterated, Earth has fallen to the unstoppable might of the Covenant. These alien occupiers have discovered something beneath the ancient African sands--something incredible ... something Forerunner."