Every Halo game has had amazing advertising, and Reach is no exception. The prequel story it tells is so important to the franchise's fiction that Bungie dedicated an entire game—their final Halo game, in fact—to telling it. This ad perfectly captures the tragedy of the fall of the planet Reach and begs us not to forget it. It also pumped us up like crazy to play Reach ("Holy crap, jetpacks!").