MGS is definitively a classic. Despite what others may say it has probably aged well enough. The game has a 90s Japanese game design to it that I love (backtracking, little secrets/advantages in boss fights, simple combat). While I don't know about the original JP version the story, themes, and dialogue are simple, to the point, and well done. Nothing really deep, but it certainly deserves to be lauded for its sheer novelty at its time. I think by that alone, this game should be played.