Board Thread:Questions and Answers/@comment-25090680-20160918142941/@comment-1672596-20160919004815

Stick with release dates. If you try to do it chronologically, it's just going to drive you mad thanks to Hideo Kojima insisting on doing countless retcons to his series, many of which simply are not justifiable (not all of them, though... the bit regarding the Third Zero never happening was at least justified due to the USSR collapsing far sooner than expected).