One of the secret endings for the game can be triggered by drowning in the lake in the 4th Sub Tunnel. What happens may seem scary at first as Freddy falls down endlessly, but after two minutes, it shows this screen. Apparently, this ending has Scott and his two kids looking at a screen. The reason why that is heartwarming is when you realize FNAF World was meant to be the last game at the time, and it's a reflection on the death of the series and how it'll affect Scott and his family. What makes the ending even more special is that there are no textures for the screen you are seeing, it's made up of individual squares. So Scott making this ending so obscure shows it is very important to him.
When you really think about it, Chipper being playable means that he finally found a place where he can be accepted. Not only has he befriended the Animatronics, even after his attempt to kill them, but people seem to actually like him for once.
This game was made to not only be the end of the series (for the time, anyway), but Scott wanted to go back to his roots and use the characters that he loved so much in a fun new way.
When Scott Cawthon removed the game from Steam due to him not being satisfied with the ratings, he would re-release the game as freeware and offer refunds regardless of how many people owned the game. Its doubles as an awesome moment because shows how much the man cares for his fans regarding the reception he receives.
Its also a sweet moment if you remember that the reception for FNaF World at the time was similar to the comments he got for Chipper & Sons Lumber Co., which is the game that nearly made Scott quit until he made Five Nights at Freddy's. Had he made FNaF World and never receive this type of backlash before, this game would be his Creator Killer. But he took it in stride and did something that not many devs would do in response to negative reception. It shows how much he has grown as a developer since then thanks to the support from his fans.
The fans gave another moment- even though Scott highly encouraged people to get their money back even if they enjoy the game for what it was, some of them refused the offer.
On top of that, fans on Reddit got together and made a huge sheet expressing ideas and improvements for the game (contains some spoilers). While most of these ideas weren't used, it shows how loyal the fans are to Scott and how much they want to see the game improve.