It’s been a while, but we finally have some updated total lifetime sales for the Metal Gear series. As of the end of March 2017, the worldwide cumulative sales have now exceeded 51.3 million copies.
The previous update, in a press release from September last year, had the franchise at 49.6 million by the end of March 2016. That means that in the past year around 1.7 million games have been sold. One new Metal Gear game was released in that time period, Metal Gear Solid V: The Definitive Experience for PlayStation 4, Xbox One and PC. A new addition to the Metal Gear Solid V experience, Metal Gear Survive, is planned for release later this year on the same systems.
Source: Metal Gear in Concert Official website