Direct quote 1997
“When I talk about "games that are like movies", I don't mean just having a bunch of FMVs. What I mean is a game that draws on the various elements and techniques of film: direction, script, lighting, etc.”
What it documents
Kojima clarified that when he speaks of games being like movies he does not mean adding a lot of FMV, but rather a game that draws on the various elements and techniques of film — direction, script, lighting, etc. He qualified that games differ from cinema because the user controls the passage of time, so having a great deal of interactivity is important; while he wants each moment to be enjoyable, ultimately his aim is to make a game imbued with a central theme.
Source
shmuplations.com; "What is Game Design?" roundtable in Game Hihyou magazine, unofficial English translation, 1997 (Kojima's contributions). View source ↗
“However, games differ from movies in that the user controls the advance of time. Having a lot of interactivity is therefore very important, but while I want each moment to be enjoyable, ultimately my desire is to make a game imbued with a central theme.”