King's first foray into straight Fantasy was this 1984 story, The Eyes of the Dragon, which is a Dark Tower adjacent tale about two young princes in a fairy tale kingdom who are pitted against each other by the king's secretly evil magician, who regular Stephen King fans will recognize as the very same Flagg from The Stand. Part palace intrigue, part YA fantasy, The Eyes of the Dragon is an early departure from the horror realm for the author and is still a gripping read to this day.