Doraemon: Nobita and the Spiral City, also known as Doraemon and the Spiral City, is the 18th animated feature-length Doraemon film. It premiered in Japan on March 8th, 1997, and was based on the 17th volume of the same name in the Doraemon Long Stories manga series. The film's release commemorated the 20th anniversary of the launch of the Corocoro Comic magazine. It was the last Doraemon film written and supervised by series creator Fujiko F.