Want to create a massively popular spy game series? Here's what to read as a first off.
Publisher Hayakawa Shobu is running "Books That Made Hideo Kojima Fair" by putting a MGS: Peace Walker slip cover on six of its books. And they are:
Shadow 81 by Lucien Nahum, High Citadel by Desmond Bagley, The Spy Who Came in from the Cold by John le Carre, Duck Call by Inami Itsuva, The Door into Summer by Robert Heinlein and Hothouse by Brian Aldiss.