[kml_flashembed movie="http://www.gamespot.com/v/KnVlkWP-5b8Muz_c" width="480" height="409"/]Right after we thought everything was over for Microsoft’s keynote presentation, the lights dimmed and a brand spanking new trailer for Halo 3‘s campaign mode was shown. The video was truly unbelievable and looks extremely promising. No available footage is available at the moment, but we will update this post as soon as we get our grubby hands on one.

Update: The trailer has been uploaded. If you can’t see the video properly try viewing it here.