Watch PHANTASMAGORIA: On Demand for Free: How to Stream the Movie Online at 123Movies. . 9 college students gather for an unforgettable evening under the guise of a group project. An apartment party ensues where shenanigans, witchcraft, and secrets unfold in unforeseen events. Phantasmagoria was the first practical iteration of “horror theater” where special lighting effects were used to scare the audience into thinking there were spirits in the room. Come join us for a night of debauchery and truth telling.