The fourth installment of Xbox's multibillion-dollar first-person shooter Halo video game franchise comes out today.
Since its 2001 launch, the Halo franchise has sold around 46-million games worldwide and has generated an estimated $3 billion. There are Halo toys, a web series, tournaments, books and more.
And some analysts expect Halo 4 to be one of the highest-selling video games of the holiday season. Here to talk about the game is Dan Ackerman, senior editor at CNET.