Five Nights at Freddy's 2 is a survival horror game developed by Scott Cawthon and is the second installment in the Five Nights at Freddy's series. The game was released in 2014, just a few months after the first game, and features new animated characters and game mechanics.

The game takes place in a new location, a toy store called Freddy Fazbear's Pizza, where the player once again takes on the role of a security guard working the night shift. This time, the animated characters are all new, including Toy Freddy, Toy Bonnie, Toy Chica, and Mangle.

The gameplay is similar to the first game in that players use security cameras and other tools to monitor the animatronics' movements and prevent them from entering the security room. However, there are several new mechanics, including a wind-up music box that must be kept running to appease one of the animatronics, and new animatronics that can crawl through the vents.

As with the first game, the goal of the game is to survive five nights, with the difficulty increasing with each subsequent night. The game also features a customizable night mode, which allows players to customize the difficulty and behavior of the cartoons to create their own challenges.

As with the first game, Five Nights at Freddy's 2 is known for its tense and suspenseful gameplay, as well as its mystery and cryptic story. The game has gained a large following and has been praised for its unique take on the survival horror genre.

Here is a guide on how to play Five Nights at Freddy's 2

1. Start a new game. When you start the game, you'll be prompted to choose which night you'd like to start on. The game has five nights, and as you progress you can unlock more nights and custom modes.

2. Learn the controls. The game is played from a first-person perspective, and you can use the mouse to look around the security office. You can access the security cameras by clicking on various buttons on your desk, and you can also wind up the music box and check the hallways with a flashlight.

3. Monitor cartoons. Your job is to monitor the animatronics, which move around the restaurant at night. Use security cameras to track their movements and make sure they don't get too close to your office. You can also use a flashlight to check the hallway, but be careful with the electricity.

4. Wind up the music box. A new mechanic in the game is the wind-up music box, which must be kept running to appease one of the animatronics. If the music box loses power, the cartoon will become more aggressive, so you need to keep winding it up throughout the night.

5. Watch out for new cartoons. There are several new animatronics in the game that can crawl through the vents and attack you from unexpected angles. Keep an eye on the vents' cameras and listen to the audio cues to know when there are animatronics nearby.

6. Use a mask. You can wear Freddy Fazbear's mask to trick some animatronics into thinking you are one of them. This is useful to avoid detection, but it is not foolproof, if some animatronics see you wearing a mask, they will still attack you.

Overall, Five Nights at Freddy's 2 is a challenging game that requires careful strategy and planning to survive. By monitoring the animatronics' movements, using your security system wisely, and keeping the music box running, you can get through each night and uncover the game's mysterious story.