92
Twilight
https://www.youtube.com/watch?v=z62_AisNjyM
As terrible a movie (and franchise) that Twilight was, there is no doubt it was a resounding success at the box office, but furthermore its influence is even more undeniable. While Twilight wasn't the first young adult series, it was the one to follow Harry Potter and officially make it an aim for studios to seek out what franchise might be the next Harry Potter or Twilight when they found out that sort of success is repeatable. Because of it we have gotten projects like The Hunger Games, Fifty Shades of Grey (not necessarily a success yet but it's bound to be), Divergent, The Fault in Our Stars and the many not so successful stories such as The Host, The Mortal Instruments, Vampire Academy, The Maze Runner, etc. While obviously it took a cumulative effort from Twilight, Harry Potter and the Hunger Games to ignite the YA genre , there's no doubt it had its place in the cause.