The Legend of Zelda
Yes, I know that it was based on a book and it came out before the first The Legend of Zelda game (1986), but I can't help but find the whole thing with the fairies, the castle's design, the final battle and escape and the overall plot similar to The Legend of Zelda: Ocarina of Time (1998).
The main difference is that Link and Zelda don't act like this in the game... but in the animated series (which was not done by Nintendo, from 1989 I think), Link and Zelda are really like Taran and Eilonwy.
The Black Cauldron inspired them?
What do you think?