Planet of the Apes was a box office success, meaning it earned a good amount of money and got highly favourable reviews from critics. The movie was given praise for exploring ideas such as class differences, religion, slavery, racism and nuclear technology. It was followed by four sequels: "Beneath the Planet of the Apes" (1970), "Escape from the Planet of the Apes" (1971), "Conquest of the Planet of the Apes" (1972) and "Battle for the Planet of the Apes" (1973). A live action television show was shown in 1974 and an animated television show called "Return to the Planet of the Apes" came out in 1975. In the animated cartoon The Fairly Oddparents episode Abra-Catastrophe has a segment where humans are slave cavemen and the apes are their overlords!