Bungie has confirmed that the upcoming 60-second Halo 3 commercial, which will be broadcasted on ESPN's Monday Night Football, will be made with in-game assets but rendered off-line to achieve better, jaggie-free visuals in a similar way to the Gears of War "Mad World" trailer. Here is the official word:
"As the press release mentions, this ad will feature CG scenes that are being built by a 3rd party agency (known as Digital Domain). Now you may be thinking to yourself – "CG!? But Bungie doesn't do CG!" – and you would be correct… until now.
Now don't get me wrong – just because this ad isn't gameplay doesn't mean it's not really cool. In fact, we provided the folks at Digital Domain with all of our new in-game models and assets. They then polished them up to movie CGI standards, animated them and rendered them to a degree of stunning beauty. There will be a lot to like in this ad and we're happy with how it's turning out. Just because you're seeing a kind of "real-life" representation of Halo 3 doesn't mean you aren't seeing real gameplay elements from Halo 3."