Five Nights at Freddy's 3 is a horror-themed point-and-click survival game developed by Scott Cawthon and is the third installment in the Five Nights at Freddy's series. The game was released in 2015 and features a new storyline and animations, as well as new game mechanics.

Set thirty years after the events of the first two games, the game takes place in a horror attraction called Fazbear's Fright. Players take on the role of a security guard working the night shift at the attraction, which is based on the infamous Freddy Fazbear's Pizza.

Unlike previous games, Five Nights at Freddy's 3 has only one cartoon, Springtrap, which is a heavily damaged version of the original cartoon from the first game. Gameplay involves using security cameras, audio cues and other tools to track Springtrap's movements and prevent him from entering the security office.

In addition to the new robots, the game introduces new mechanics such as audio devices that can lure Springtrap away from the player's location and illusions that can distort the player's vision and make it more difficult to track Springtrap's movements.

The game is known for its tense and eerie atmosphere, as well as its challenging gameplay that requires careful strategy and quick thinking to survive. The game's story is also heavily shrouded in mystery, and players must piece together clues and hidden information to uncover the full story.

The following is a guide on how to play Five Nights at Freddy's 3.

1. Choose your difficulty level. The game offers several difficulty levels for you to choose from, from "Nightmare" to "Easy". Choose the level that best suits your skill level.

2. Familiarize yourself with the controls. The game uses a simple point-and-click interface. Use the mouse to interact with the various tools and devices in the game, such as the camera and audio devices.

3. Monitor Springtrap's movements. The game's only animatronic "mousetrap" will move around the attraction throughout the night. Use the security camera to track his movements and prevent him from entering the security office.

4. Use the audio device to draw away the mousetrap. You can use audio devices to distract and lure the trapper away from your location. Use these devices strategically to prevent him from reaching the secure office.

5. Manage your resources. There are several limited resources in the game, such as battery power and audio cues. Use them wisely to make sure you have enough resources to get through the night.

6. Watch out for hallucinations. Illusions in the game can distort your vision and make it more difficult to track Springtrap's actions. Stay alert and be prepared to adjust your strategy when you encounter hallucinations.

7. Survive until 6:00 am. Your goal is to survive until 6:00 a.m., when the night shift ends. If Springtrap enters the security room or your battery runs out, the game is over.

Overall, Five Nights at Freddy's 3 requires careful planning, strategic thinking and quick reflexes to survive. It's important to stay alert and use all the tools and resources at your disposal to get through the night.