"Ok, so as many of you already know, I'm bad with release dates," said Cawthon. "The game is finished. :)" He noted that some players had run into a problem with the fullscreen option, and said he expects to have it fixed by the end of the day.
Cawthon originally announced the game in April as Five Nights at Freddy's 4: The Final Chapter, and said at the time that he planned to release it on Halloween — more than three months from today. Curiously, the Steam release and last week's trailer are both missing the "Final Chapter" subtitle, although the game's Steam synopsis does still refer to Five Nights at Freddy's 4 as the last game in the series:
This time, the terror has followed you home.
In this last chapter of the Five Nights at Freddy's original story, you must once again defend yourself against Freddy Fazbear, Chica, Bonnie, Foxy, and even worse things that lurk in the shadows. Playing as a child whose role is yet unknown, you must safeguard yourself until 6am by watching the doors, as well as warding off unwanted creatures that may venture into your closet or onto the bed behind you.
You have only a flashlight to protect yourself. It will scare away things that may be creeping at the far end of the hallways, but be careful, and listen. If something has crept too close, then shining lights in its eyes will be your end.
The phenomenally successful Five Nights at Freddy's franchise began with the original game in August 2014. Its first sequel, Five Nights at Freddy's 2, followed in November of that year, and Five Nights at Freddy's 3 was released this past March. In April, Warner Bros. announced that it had picked up the movie rights to the series and was developing a feature film. You can check out the trailer for the fourth game below.