There is just something so overtly romantic about Japan's history. Their isolationism preserved a culture that is so different from the ones that fell prey to western imperialism. Instead of fighting other countries, they fought within their own county for years until united under one central government. It was a chaotic time full of honorable and skilled warriors, corrupt or noble lords, and epic battles that were made so much more involved without (for the most part) the use of gunpowder. It is not surprising that this period in history transfers well into video games. There is so much you can do with it, whether it is telling the true history, perverting it for entertainment, or just focusing on a lone samurai or ninja.