"King Kong" was a box office success that has since inspired sequels, remakes, and countless knockoffs from all around the world. Regarding the latter, Hong Kong treated us to the excellent "The Mighty Peking Man," while the United Kingdom has produced trashy treats in the form of "Konga" and "Queen Kong." The monsters in these movies don't hold a candle to the Eighth Wonder of the World, but the carnage they cause still makes for some entertaining viewing.
Unfortunately, Japan's attempt to capitalize on the craze, "The King Kong That Appeared in Edo," failed to make a lasting impression on viewers — because it's been lost for decades. The reason for the film's disappearance is shrouded in mystery, but it's believed all copies of Sōya Kumagai and Daijō Aoyama's monster opus were destroyed during World War II. That said, some information about the movie is available, and it sounds like a fun slice of kaiju mayhem.