"Kojima came up with the stealth-based gameplay with the MSX2's
hardware limitations in mind. Since the MSX could barely handle
conventional action games (due to the fact that the screen would
flicker when there are too many animated objects and the hardware
couldn't handle scrolling very well), Kojima decided to make a game
where the player had to avoid contact with the enemy instead of fighting"
Es básicamente lo que dijo Kojima en una entrevista televisiva aquí
en España: ftp://ftp.plus.es/promos/entrevistakojimaWEB_Small_200k.wmv
Saludos
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SapphiRe