Custom Night is always an interesting yet challenging extra side mission of FNAF games, and with UCN Mobile (Ultimate Custom Night) created by a fan, you will experience even more challenges as well as earn yourself more fun. Download this FNAF game by a fan right now and test your abilities again. You are allowed to customize the animatronic robots’ difficulties before jumping into the action. You can make them hard or easy to cope with! When they begin hunting you, try your best to fend them off using your strategies! Wish you luck!