Most people probably play Halo titles for the multiplayer. I don't blame them. But the singleplayer campaign in Halo 4 is too excellent to ignore.
The legitimate launch trailer—which focuses on the storyline—is pretty good on its own. It's simple, it alludes to the main threat and theme of the game.
But I like this alternative one by Luke Ritson better. This isn't his first time he's taken a pretty good launch trailer and made it even better. This latest one feels like a trailer for a powerfully emotional film, which speaks volumes to both the quality of Halo 4's campaign and this editor's launch trailer tweaking skills.
Halo 4: Alternative Launch Trailer [YouTube]