Portopia is the biggest missing piece, to many US enthusiasts, of the history of Japanese gaming. It led to the creation of Dragon Quest, but it had a huge influence all on its own, which can be felt in a wide variety of other Famicom titles, including some that did make it to the US. Why do The Goonies II and Dr. Chaos have those weird room-based adventure sections? It’s because of Portopia, trying to mix its kind of menu-based first-person gameplay with the pre-existing side-scrolling platforming game style popularized by Super Mario Bros. It seemed random to Western players at the time, but Japanese players would have known exactly what those games were trying to do.
We’ve mentioned Jeremy Parish and his various Works projects before, and they’re always interesting and informative, a great antidote to the strident style of many popular Youtubers, and this one is especially important to anyone seeking to understand how the Japanese game industry grew and evolved in the Famicom era.