Flash Gordon: The Greatest Adventure of All (1979) by Filmation was an animated feature produced by Filmation for broadcast by NBC television in 1979, but not broadcast until August 21, 1982. The original film elements were apparently lost when ownership of the Filmation library traded hands in the 1990s.
This is what Flash Gordon was supposed to be before it was retooled for Saturday mornings in 1979-80. You can see the many parallels that it shares with the classic Sci-Fi Opera of the same time. I like that it is a period piece. Placing it roughly four or five years ahead of the original serials of 1936, Nazi Germany is getting assistance from Ming the Merciless, and Flash brings together the many races of Mongo to overthrow their oppressor. Take some time and enjoy this feature length jewel of American animation. Leave your thoughts bellow
Follow this link to watch this film, which only aired once, on Archive.org: https://archive.org/details/youtube-f6YhSjRiVio