Five Nights at Sonic’s is a Five Nights at Freddy’s fan game. The cast of animatronics in Fnaf game is replaced by new ones. They are workers in Sonic’s Hero Pizza Palace. Meanwhile, you are also another employee. You can find 4 of the old-school heroes of the 1990s from 12 to 6 AM. They are the robots which help kids feel happy during the daytime. At night, they become dangerous and unpredictable. You should check monitors regularly to know their moves and figure out how to prevent them from entering the office. Have fun!