FNAF UCN game is an awesome horror FNAF game by a fan. You must get ready to meet Freddy and his friends, and use all items to fight them off.
FNAF UCN [DELUX] is a great version of FNAF game created by a fan. This fan-made horror game based on FNAF series by Scott Cawthon also pits you against the animatronic robots, including Freddy, classic Golden Freddy, Withered Foxy, Bon Bon, Funtime Freddy, etc.

They will pop up and attack you everywhere in the building. You must use all the equipment you have, such as a mask or a flashlight, in order to defeat all of them for your survival. Good luck with FNAF UCN game!