Analysis of information sources in references of the Wikipedia article "Metal Gear (jogo eletrônico)" in Portuguese language version.
Kojima: I really don't like saying this, but it really wasn't up to my standards. The care that I put in the original wasn't there. It [the Famicom version] was a more difficult game. In the very beginning, when you go from the entrance into the fortress, for example, there are dogs there. In the Famicom version, the dogs just come after you and you get killed. It was too difficult to get into the fortress. The fun stealth element was not there, and the actual Metal Gear, the robot, doesn't appear in the game.
Kojima: I really don't like saying this, but it really wasn't up to my standards. The care that I put in the original wasn't there. It [the Famicom version] was a more difficult game. In the very beginning, when you go from the entrance into the fortress, for example, there are dogs there. In the Famicom version, the dogs just come after you and you get killed. It was too difficult to get into the fortress. The fun stealth element was not there, and the actual Metal Gear, the robot, doesn't appear in the game.