Night 6, also known as 'Nightmare', is the ultimate challenge in Five Nights at Freddy's 3. Springtrap is at his absolute fastest and most aggressive, and the phantom animatronics appear with extreme frequency, often back-to-back. System errors will be constant, and you will have very little breathing room. This night requires perfect execution, quick reflexes, and a deep understanding of all game mechanics. There's no room for error. The reward for surviving this night is the 'Good Ending' and a star on your menu.
