Satan's Sphinx is reported to be a video banned by the U.S. government due to its satanic messages that led to the viewers' suicide. There is literally no information on it outside of a probably faked Yahoo! Answers question and a bad YouTube video. Supposedly, this is because of government censorship.
To this day, no one knows who created the film, and why he/she did it. Only the government has every detail and plot about it. Anyone who asks them about the film will be sent to prison for 50 years in maximum security.