CAL4M1TY on 20 October 2009
I think it'll need:
1) A spartan at the forefront of the story (main character)
2) Severely heavy marketing to remind people that it is the next big halo FPS shooter installment, and not a half-step, side-story or different genre game.
3) Some amazing multiplayer with no problems from day 1
If it has all that, it might sell as much as Halo 3. I'd think 15 million is highly unlikely.
