The balls of Konami to explicitly call this "The Definitive Package" knowing they sold Ground Zeroes separately is astounding. If you want an excellent introduction to MGS5 that isn't the 1 hour crawling simulator in the hospital, this is the way to go. At the time of writing, I have yet to finish Phantom Pain, but based off of what I have already experienced, this is the first Metal Gear game where I have truly enjoyed the gameplay, enough so that I want to delve back in to the earlier games with a new set of eyes.