If you've never heard of Fury of the Demon (La Rage du Démon), you're not alone. The silent French film, which may or may not exist, was allegedly made in 1897, and is rumored to be among the most overwhelming cinematic experiences ever. If mythology is to be believed, it exists in the rarefied company of cursed horror movies (and movies that drive people insane). It's a legendary picture, discussed only in hushed tones by those who haven't, and may never, see it. Much like similarly legendary London at Midnight, Fury of the Demon is a lost movie, and one that may only exist in the crazed minds of those subject to a curse created by a shadowy cult figure named Victor Sicarius.
Rumors of Fury of the Demon's existence picked up traction in the 2010s. It's the subject of a film of the same name, Fury of the Demon, which screened at festivals in 2016 and was released in theaters in 2017, and which may be little more than an exercise in myth making. Such is the nature of cinema - it makes myths about everything, even itself.
There have been many movies that made viewers sick, but, if the tales spun about Fury of the Demon are to be believed, none have had the profound impact of the short, which may or may not have been made by Georges Méliès. The 2017 film Fury of the Demon claims the original picture was screened on three infamous occasions; at each of these screenings, it's rumored to have made audience members lash out violently. While art has been known to spark a riot or two every now and again, it usually isn't the work of demonic forces. Fury of the Demon, on the other hand, is rumored to have deep ties to the occult, and the alleged curse on it can drive the viewer insane.
If all of this weren't enough, the movie about Fury of the Demon is also shrouded in mystery. It's purportedly a dense, mesmerizing film, yet runs only 60 minutes, despite the 100+ years of history covered. Reviewers remain confused as to why it's so short, and suggest it feels much longer than it runs (in a good way).