Sword and the Sorcerer is a 1982 fantasy film directed by Albert Pyun (Alien from L.A.). It stars that guy from Murphy Brown (Joe Regalbuto), that guy from Night Court (Richard Moll), and that weird-looking bald guy in all the Burt Reynolds movies (Robert Tessier). It also features the silliest sword I’ve ever seen, and I’ve played a lot of Final Fantasy games.
The silly sword has three parallel blades that are launched from the hilt like prop blades being pulled across a guideline, and there’s not nearly enough of it in the movie. There’s even less of the sorcerer, who has more in common with a level one mage: he’s constantly revived and killed without accomplishing anything of consequence in between.
Sword and the Sorcerer is better than Eye of the Serpent, but I’m hard pressed to come up with any other worse fantasy examples. I would happily listen to other people’s D&D campaign stories as an alternative.