Other series of novels have each book ending with a cliffhanger and to be continued.
/has PTSD for Song of Ice and Fire trying to make an Archive upload. Good things it's pro fic and has nothing to do with LnC. Otherwise, a whoever got to GE it in another decade or so would probably go bonkers
On a more serious note:
In which category fall episode-adaption series that also end where the episode ended. Even if it's a cliffhanger in the big picture but got a distinct plot-arc on its own, too. Yes, I do like to find the edge cases
Michael