Castle shows you a film's cast one actor at a time, starting with the least famous billed name and working up to the biggest star. The earlier you name the film, the better your score — waiting for the lead is safe, but where's the glory in that?
The daily Castle is the same film for everyone, so the share grid tells your friends exactly how deep into the cast you had to dig. Free Play deals unlimited films, and Eras mode restricts the mystery film to a decade of your choosing — a great way to test how well you really know 1980s cinema.
The first names revealed are usually supporting players, so treat them as a fingerprint: one distinctive character actor can identify a film faster than the star, because stars have fifty famous films and character actors have five. Think about what the revealed actors have in common — genre, era, nationality — and let the intersection narrow the field. If two revealed names shared a famous ensemble, resist the urge: the puzzle loves casts that feel like one film and belong to another.