The unreleased Nes game: JACK THE GIANT SLAYER!   This game was only released in

Japan as Jumpin' Kid and was slated to be a US game called JACK THE GIANT SLAYER.

I had a rom hacker check out the Famicom Jumpin Kid rom and he actually found

the Jack the Giant Slayer title screen underneath the Japanese title screen!  Since the

rest of the game is in English, this is probably what the US game would have been.