Okay, we can talk about FNAF. I've only played a few times, horror games aren't real my cup of tea. But man, I know a desperate franchise when I see one!
Any of the games past the first are super sad. They're elaborating on the plot no one cares about. This also spawned one of the worst fanbases there are, as fan art and fanfictions for a game with virtually no plot have eclipsed the Internet.
Just make one game and be done. Does Minecraft have a sequel?