When you look at the immense popularity of Dragon Quest in Japan these days, it's hard to believe that it came from anything but itself. It's often credited as the first and most influential Japanese RPG. While it's certainly one of the most influential, it's not the first. It owes its design to a handful of different predecessors, many of which are western and were released on home computers. Dragon Quest can lay claim to being the first turn-based console RPG (the first non-turn-based console RPG being Hydlide) though.