This game is the third game that doesn't have a Horror-genre, the first two being FNaF World and Freddy in Space 2.
All of the enemies reference someone in the main games and the other spin-offs. The only exceptions are the VR sisters (though they are probably based on Five Nights at Freddy's AR: Special Delivery's Arcade Mayhem Event) and Dreamgeist (who references the theories made around Five Nights at Freddy's 4).
The game's parody is inspired by most arcade fighter games, such as Streets of Rage and Final Fight.
This game is the first game in the franchise to not have Freddy's name in the title.
This game is the first fighting game in the entire franchise.