If you were ever so slightly busy in the last 12 months, you may have missed hearing about the Momo Challenge, an old wives' tale updated for Gen X parents which claimed that a bird-legged witch named Momo would hunt their tablet-hugging children through YouTube and kill them with viral stunts. But in an age in which a Slender Man creepypasta can gross over $50 million worldwide, this flash in the pan is apparently big enough to hatch not one but two wholly separate movie projects.