Five Nights at Freddy's 3 is a horror-themed survival game developed by Scott Cawthon. In this game, players take on the role of a night security guard who must monitor a dark and eerie pizza restaurant for five nights, while avoiding deadly animatronics who roam the halls at night.

Players must use various tools to keep the animatronics at bay, including a security camera system, audio devices, and motion sensors. The game features a number of new mechanics, including the ability to seal off vents and use a security gate to block animatronics from entering the security office.

One of the most notable features of Five Nights at Freddy's 3 is its immersive atmosphere, which is created through its eerie sound design, dimly lit environments, and jump scares. The game's story is also a major part of its appeal, with players uncovering clues and piecing together the events that led to the restaurant's closure.

While the game has received mixed reviews due to its repetitive gameplay and lack of innovation compared to its predecessors, it still maintains a large fan base due to its unique horror style and engaging storyline. Overall, Five Nights at Freddy's 3 offers a thrilling and terrifying experience for those who enjoy horror-themed survival games.