I don't think that there is any.
I've seen someone play the campaign as a jackal by modding their game.
There already is one.
yes, unless you want to play halo 3 mythic which comes with ODST
Unfortunately, There is no Halo 3 demo
No. You can not be "Halo" in the Halo Series. You play Master Chief in Halo: CE - Halo 3. You play as Noble in Halo: Reach.
i bet they do most of cool boys play halo 3
You can play halo 3 on any xbox 360.
Bruno Mar's stated , I play Halo 3 EVERYDAY .
the same way in halo 3 because when you play halo 3 mythic it says your playing halo 3
you dont ever play as a scarab in Halo 3...you play as a scarab in Halo wars.
play halo 1 halo 2 halo 3 odst halo reach then you will know