The medievalist.net has an article calling The Conqueror, starring John Wayne as the worst movie ever made.

It depends on what qualities you are judging this movie. John Wayne as Timojin, AKA Genghis Khan is a stretch. The acting and script may not be the best, but the action scenes, as I recall them from 30+ years ago were a lot of fun. I only saw the movie once.

I watched the trailer and the cavalry charges and other fighting scenes are cool. The clip with the dancers wasn’t bad either. Of course, my judgement is as a 1950’s action movie. There is action and adventure and challenges to the hero. There is also a love interest.

I don’t think this is the worst movie I have ever seen. I think it is one that I will track down and watch again. It fits a lot of the stereotypes of the fantasy adventure genre of RPG’s. If you play D&D or a similar FRPG, this movie should be a fun little diversion.