Metal Gear Solid 5: Ground Zeroes contains just a fraction of the world map which will be available in The Phantom Pain.
If you’re worried this means Ground Zeroes is small, the developer has said in the past that The Phantom Pain has “enormous volume”, so it could still be pretty hefty.
Kojima offered a few other snippets of information, noting that Ground Zeroes if both a prologue to Metal Gear Solid 5: The Phantom Pain and a tutorial to Metal Gear Solid in general, which is ‘transitioning to a sneaking simulator’.
Ground Zeroes does not include the real-time effects of The Phantom Pain, but does contain a variety of missions set at different time of day, he added, and featuring different play styles. It’s due on PlayStation 3, PS4, Xbox 360 and Xbox One at the end of March, and is a budget release designed to give fans something to chew on while The Phantom Pain’s lengthy next-gen development continues.