Check Hideo Kojima's Twitter account. He's posted some pictures of random Metal Gear and Snatcher design docs that he's recently come across. Pretty cool and very nice of him to share. Turns out that he presented a proposal for a game called Metal Gear Intruder back in 1986, and it was rejected :lol:
That's pretty cool! Funny that I recognized one of the drawings as a Map plan for Building 1 in MG Xp