Board Thread:Questions and Answers/@comment-18136416-20130909225456/@comment-1210805-20130909231113

There are several official books, comics based on MGS and MGS2, as well as the digital graphic novels, but nothing that it 100% canon. All of those things are retellings of the games' stories with a quite a few changes and a lot of artistic license. If you haven't played certain games then most of them aren't terrible for getting up to speed, but some of the changes can be quite contradictory.