You've seen fan-made games. You know at Scott Cawthon, the producer of Five nights at Freddy's game. Fan-made games are games made by Scott Cawthon. As you know fan-made games are very, very similar to the five nights at Freddy's game, they are almost the same so they have already done these games in order to compare them to the five nights at freddy's game. There are so many fan-made games too.