In one of the world's worst kept but most fun secrets, The Phantom Pain, which everyone already suspected to be Metal Gear Solid V, was officially unveiled as such at this week's Game Developers Conference. Before we get into anymore, go ahead and watch the trailer, because it's fantastic.
In Metal Gear Solid V, Snake has been in a coma for 9 years. Helmed once again by series mastermind Hideo Kojima, the final product is actually a combination of Ground Zeroes and The Phantom Pain, with the former acting as a prologue to the latter.
Kojima cleared this up some, saying, "'Ground Zeroes is a prologue of 'MGSV'. 9 years after that event will be 'The Phantom Pain.' MGSV is constructed w/ prologue and main game 'TPP'. The game play demo I presented today is the opening of 'TPP' which is tutorial that starts from crawling."
So yeah, kick off an open-world rescue mission with the Ground Zeroes portion, then head right into post-coma crawling with Snake in The Phantom Pain.
Metal Gear Solid V is currently in development for Xbox 360 and PlayStation 3, but the demo at GDC was running on PC.