curious village was the first game on the DS, right? if so, no, not at all.
i think there's like, just 2 characters appearing from the original game in the crossover, and those are pretty irrelevant to the story. (which is pretty stupid tbh)
really, there's two trilogies, a movie and the crossover in the layton series.
as long as you play the trilogies in order, you're not being spoilt