Sadly, the older you get, the more you realize almost everything is actually based on something else.
I remember when Hunger Games was published, and everyone was raving about how new and different and exciting the idea was, and I kept thinking "Isn't this just Battle Royale?"
Anyway, I haven't read any of Dashner's stuff. I bet he had a lot of pressure on him after Maze Runner to come up with a new series that would be not too similar to MR, but just as popular.