: This is commonly refered to as 'spectator mode.' A few games have it already.
: One fairly early and cool implementation I remember was in 2005's Project
: Gotham Racing 3 on Xbox 360. You could spectate your friends races, or
: pick from the 'best' players that were online right now and watch them
: race. There was even an achievement for making that list! Which I got!
: (when the online scene was long dead and no-one else was playing...)

: It is, and in a way I'm kind of surprised it hasn't happened already because
: of it's obvious bandwidth and quality advantages over something like
: Twitch. But, ya know, game developers have puffed and professed how much
: they love competitive for ages but seem unwilling to make the investments
: on big features that would really support it.

: It'd also be cool if it allowed non-participants to broadcast their
: commentary over it. So you get fantastic, reliable visuals as well as
: explanation/thoughts on what is transpiring.

Didn't 343 announce spectator mode?