FNF Character Test Playground 4 is the latest and hottest version of the famous sandbox mode for the popular musical arcade. Here you have a chance to play not just as Boyfriend or Girlfriend which are the usual protagonists of the game, but also as any of the opponents you have encountered during their adventures. Besides, there are a slew of new characters that have nothing to do with music at first glance – for instance, a duck or even a bus! Intrigued? Then start playing right now!