Ground Zeroes, the prologue to Metal Gear Solid 5: The Phantom Pain, will launch for PlayStations 3 and 4, Xbox 360 and Xbox One in spring 2014.
Digital versions will cost £19.99 on current-gen consoles and £29.99 on next-gen. Boxed versions will be released for PS3 and Xbox 360, also priced £29.99.
Ground Zeroes will act as an introduction to the story and gameplay of its bigger brother, The Phantom Pain, which still lacks a release date.
Metal Gear's big boss Hideo Kojima has said that players will be eased into the new open-world gameplay of Phantom Pain in Ground Zeroes, although full details of its plot are scarce.
"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: Ground Zeroes has been designed to introduce key elements, allowing them to fully benefit from all that the new game will offer."