animatronic characters, Five Nights at Freddy's, Ultimate Custom Night, horror game, dark atmosphere, arcade style, haunted pizzeria, jump scares, survival gameplay, eerie music, flickering lights, security cameras, office setting, sinister animatronics, fan theories, game lore, Scott Cawthon, complex storyline, hidden messages, Easter eggs, metallic textures, rusted structures, creepy dolls, glowing eyes, night shift, power management, strategic gameplay, ambient sound effects, tension-filled environment, 3D-rendered graphics, point-and-click mechanics.