Sword of the Valiant: The Legend of Sir Gawain and the Green Knight (1984)

Only the Brave or the Foolish dared to play the Green Knight's deadly game...

Gawain was a squire in King Arthur's court when the Green Knight burst in and offered to play a game with a brave knight. Gawain journeys across the land, learning about life, saving damsels, and solving the Green Knight's riddle.