Xyw13;35278 wroteNot necessarily, look at LOTR trilogy. They did it at once all 3 movies.
hmm !!! well I can't contradict you in that one. since I love that trilogy ...
but they made the 3 at once, cause they already saw the sells rate of the books, they were BIG, and after the movie it skyrocket ....
mainly they know it will be a HIT !!!
[spam: love the books (the originals, before the movie editions) more than the movies] XD