So, I'm quite into films, and horror is my favourite genre.
I don't own many franchises in full or almost in full.
But when I first started collecting dvds, I did tend to buy every film in a particular franchise if I enjoyed the first film or two.
I bought Alien (1979) and Aliens (1986) second-hand for 99 pence each (less than a dollar each!) and they're fantastic.
So, I went back to the second-hand shop and bought Alien 3 (1992), Alien Resurrection (1997) and Prometheus (2012) ... erm, yes.
Alien 3 (theatrical cut) was pretty good; Resurrection was so bad it's funny and despite the gorgeous shots and good acting by Michael Fassbender, Prometheus wasn't my thing.
But I guess I'm a slow learner. XD
I added the Star Wars prequel trilogy (mostly pretty crap), The Force Awakens (copy of Ep 4: A New Hope but with added SJW propoganda) and Rogue One (actually pretty good) to my original trilogy (excellent).
However, I am learning that just because a film is so good it spawns a franchise, it doesn't necessarily follow that the following films are gonna be any good.
As far as franchises go, I have all six films in the Alien franchise; the Star Wars franchise except for The Last Jedi and Solo; the Nightmare on Elm Street franchise except for Freddy vs Jason; the Terminator franchise except for Genesis; and the Jurassic Park franchise except for Fallen Kingdom, obviously.
I sometimes watch youtube film reviewers and they often have literally every franchise, in full - dvds and blu-rays worth thousands of dollars.
Some speak of their favourite franchise. I just can't get on board with that.
Take the Halloween franchise. I own the first two films, Halloween (1978) and Halloween II (1981) and saw Halloween III Season of the Witch (1982) when I was a kid. The first film is a masterpiece which I thoroughly recommend; the second film is ok in that it is, or should've been, a good conclusion to Michael Myers. But how the hell can you buy all ten films in the franchise?
Apart from Season of the Witch it's essentially the same thing: an escaped mental patient in a mask stalks and kills people. XD
Or am I talking crap? XD
All opinions welcome ...