[SmG XLORM]

it's fake but cool and if they did do it they would need to put it as an optional.
BTW capcom has nothing to do with halo (never has, never will) and you could tell it was fake from the fact that when a game is in dev stage they dont make the mini-games until the full game is complete and are often done as an after thought.

this is the actual reason that this video exists
"You receive this mini game if you pre-order Halo 4. It is created by a join movement between CapCom and Bungie"

so it is not part of the game, it is actually a separate piece of software and is not part of the game.