Doors and vents
In the first, fourth, seventh, and eighth games, you have to close doors when an animatronic is nearby. The fake ending and custom night update of the fifth game also have doors that do the same thing. Vents are a way for animatronics to get to the player in the second, third, sixth, seventh, and eighth games. They are also the main way for the player to get around in the fifth game.
Jump scares
Every main game in the series has jump scares, which cause the player to lose because it seems like the animatronics are coming after them from off-screen. Most jump scares involve an animatronic character that pops up out of nowhere, followed by a loud scream or roar. Some jump scares, like those by Golden Freddy (in the first game), Nightmare, and Nightmarionne (in the fourth game), consist of a single screen with shrill, distorted audio. These jump scares usually crash (or restart) the game. In each game, the player must use different tools to avoid being attacked by jump scares and move forward.
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