Five Nights at Freddy's 4 is the fourth installment in the Five Nights at Freddy's series, released on July 23, 2015 for Microsoft Windows, Android and iOS.

The game takes place in 1983 and follows the story of a young boy tormented by the animated characters of the nightmarish Freddy's Pizza, the setting for previous games. Players must survive five nights while avoiding the animatronics that roam the halls of the boy's home.

Unlike the previous games in the series, Five Nights at Freddy's 4 takes place not in the pizzeria, but in the main character's home. The game mechanics have also been slightly modified, with players now having to check doors, closets and beds instead of monitoring security cameras.

The game received generally favorable reviews at release, with critics praising the atmosphere, sound design and scares. However, some criticized the game's difficulty and the unclear nature of the story. Despite this, the game was a commercial success and it remains a popular entry in the series.

If you want to start playing the game, then the following information will help you.

1. Get the game. You can find the game on Steam or other platforms where the game is available.

2. Start the game. After the game is acquired, launch the game and select the "New Game" option in the main menu.

3. Learn the controls. The game is played in first-person view and you will use the mouse to look around and the keyboard to perform actions. The main action you will perform is to close the door to prevent the animatronics from appearing.

4. Survive in the night. Each night you will need to survive until 6am without getting caught by the animatronics. You can check the door and use a flashlight to see if there are animatronics nearby.

5. Listen to audio cues: animatronics make distinctive sounds, and you can use these sounds to determine their location. You can also listen to the sound of breathing, which indicates that an animatronic is near you.

6. Use flashlights sparingly. A flashlight can help you see things in the dark, but it can also attract animatronics. Use it sparingly and only when necessary.

7. Use headphones. Wearing headphones can help you hear audio cues more clearly, which is essential for survival.

8. Be patient. The game can be challenging and may require multiple attempts each night to survive. Don't give up and keep trying until you succeed.

By following these steps, you should be able to play Five Nights at Freddy's 4 and survive each night. Good luck!