Five Nights at Freddy's 2 is a survival horror video game developed by Scott Cowden and released in 2014. It is the second  of the Five Nights at Freddy's series and is available on multiple platforms, including iOS, Android and Windows. here are some notes about the game app:

The game takes place in a pizzeria called Freddy Fazbear's Pizza, where the player takes on the role of a security guard. The objective of the game is to survive for five nights while monitoring the restaurant's security cameras and spying on the animated characters roaming the restaurant. The player must use limited resources, such as a flashlight, to fend off the animatronics and prevent them from entering the office.

Several new animatronic characters appear in the game, including Toy Freddy, Toy Bonnie, Toy Chica, Mangle, and Balloon Boy, among others. These animatronics are more advanced than those in the previous game, and they can now move freely around the restaurant, making them more difficult to track.

The game introduces several new mechanics, such as a music box that must be wound up periodically to stop a particular cartoon, and a mask that can be worn to disguise the player as a particular cartoon. There are also some new gameplay features such as a flashlight to illuminate certain areas to block cartoons, and a new ventilation system that cartoons can use to get into the office.

This game is notoriously difficult, and it requires a high level of skill and strategy to survive all five nights. As the game progresses, the animatronics become more aggressive and the player must always be on guard to avoid being surprised. The game also features several different endings, depending on the player's performance.

If you're new to Five Nights at Freddy's 2, here's a beginner's guide to help you get started:

Learn the controls: Familiarize yourself with the game's controls, which may vary depending on the platform you're using. You'll need to use the security camera to monitor the cartoon, wind up the music box, and put on a mask if necessary.

Monitor the cartoons: Keep a close eye on the cartoons via security cameras, especially those closer to your office. You need to know where they are and what they've been doing.

Manage your resources: Your resources are limited, such as battery life for flashlights and power for other systems. Use them wisely and conserve them as much as possible, or you may not make it through the night.

Use the music box: The music box is vital to stop one of the cartoons known as "The Puppet". You need to wind it up regularly throughout the night or the "puppets" will come to you.

Use a mask: A mask can be used to disguise yourself as one of the animatronics and avoid being attacked. However, it does not work for all people, so use it strategically.

Check the vents: Animatronics can enter your office through the vents, so watch out for them and check them regularly with your flashlight.

Stay calm: Games can be very stressful and scary, but try to stay calm and focused. Panicking and rushing can lead to mistakes that could cost you the game.

Learn from your mistakes: If you fail, don't get discouraged. Review what went wrong and try again with a new strategy.

Remember, this game requires patience, strategy, and quick reflexes. Keep practicing and you will eventually become a master at surviving Five Nights at Freddy's 2.