“I mean, if you shoot someone the blood should be red colored. In the same way that a person who's been shot has to show a painful expression on their face. It's how you get people to recognize and understand that being shot with a gun actually IS painful.”
Kojima said in 1999 that Europe had been requiring games to change the color of blood to green, and that as a result every game was using green blood; he added that for his next game he wanted to subvert that and make the blood white. He also argued that if you shoot someone the blood should be red, and that a person who has been shot has to show a painful expression, because that is how people recognize and understand that being shot with a gun actually is painful.
“Because of that every game now uses green blood, but I'm thinking I'd like to subvert that in my next game and make the blood white.”