Metal Gear Solid 5: Ground Zeroes as a standalone prologue to MGS5: Phantom Pain next spring, and both games are confirmed to be coming to Xbox One, PS4, PS3, and Xbox 360. Konami UK tells us the packaged current-gen versions will be sold at £30, while downloadable versions are priced £20 on current-gen systems, and £30 on Xbox One and PS4; it's unclear if there'll packaged next-gen versions as well. While it's yet to be confirmed, we'd say that would translate into prices below $60 in North America. It's also unknown when Phantom Pain itself will be released.
The relationship between Ground Zeroes and Phantom Pain has been as complicated as a Metal Gear Solid plot, but today's news brings some definite clarity to proceedings. Ground Zeroes was revealed first, then Phantom Pain cropped up after being teased as a game by fake outfit Moby Dick Studio. Once Phantom Pain was revealed to be a Metal Gear entry, it was then thought it and Ground Zeroes were part of the same game. Konami then stepped in to clarify they were two different games, and that brings us to today's resolution.
In the words of series creator Hideo Kojima, then: "The advanced capabilities of the FOX Engine have allowed me to tell the new story in a new way. There will be a significant difference in what Metal Gear Solid 5: The Phantom Pain brings to the series, so we want to ease players into the new open world environment and its potential. As such, Metal Gear Solid 5: Ground Zeroes has been designed to introduce key elements, allowing them to fully benefit from all that the new game will offer."
Update: Konami revealed the US prices for Ground Zeroes: $20 downloadable and $30 packaged on current-gen, and $30 downloadable on next-gen. Again, going by Konami's wording it seems the game will be downloadable-only on PS4 and Xbox One.