Halloween is the one night of the year when the room is not self-selected. Everybody is there — the kids who came back from trick-or-treating, the friend who genuinely does not like being scared, and the one person quietly hoping for something upsetting. Picking for that room by consensus does not work, which is the entire reason a halloween movie randomizer beats a group chat.
Run it in two shifts. While the young ones are still up, spin and take the first card that lands on the family shelf — the 59 films tagged family or animation are the ones with monsters instead of injuries. Once that audience goes to bed, press again: the same random halloween movie generator, the same pool, an entirely different evening.
For a double feature, the runtime filter is doing the real work. 393 films in this pool run under 90 minutes, so two of them plus the arguing and the popcorn break still finishes before midnight. Horror is one of the few genres where that arithmetic works out; pick two long ones and the second becomes a film nobody actually watches.
Filling a whole month rather than one night? Spin repeatedly in a single sitting and write down what you like. The draw never repeats a title within a visit, so ten presses give you fifty distinct candidates — more than the 31 slots October has, even after the vetoes. Build the list in August; doing it on the 31st is how you end up watching the same three films again.
One boundary, stated plainly because this is the page most likely to have a nine-year-old in the room: nothing here is an age rating. The library carries no content warnings, and the minimum-rating filter measures how much people liked a film, not how hard it goes. Open the card and read the synopsis before you commit. And if the room cannot even agree that it wants something spooky, this is the wrong page: the what movie should I watch tonight page runs the same draw across all eighteen genres.