Darkness is a Halo 3 advertisement released April 3, 2008 and runs for one minute and eighteen seconds (1:18). The trailer is a preview of the Halo 3 Legendary Map Pack, which was released April 15, 2008. In the short film, there are introductions of all three maps in the map pack: Ghost Town, Blackout and Avalanche.
- "I had a dream... But it was not all a dream. The bright sun was extinguished, and the stars did wander darkly in the eternal space. Reignless, pathless, the icy earth swung blind and blackening in the moonless air. Morn came, and went, and came... and brought no day, and men forgot their passions in their dread. All earth was but one thought, and that was death..."
- — Quoting George Byron