When Metal Gear Solid 4 was released, multi-media store Tsutaya held a promotion for 15 movies that influenced MGS. For Metal Gear Solid: Peace Walker, it’s not about movies, but books.
https://lastchance.cc/rent-15-movies-that-influenced-metal-gear-solid-31044878%3C/a%3E%3C/p%3E
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 A. Heinlein and Hothouse by Brian Aldiss.
All but Duck Call are originally English-language books.
