You can play Fnf vs İmpostor V3 in a99.io as unblocked.
You will see the character named impostor in the game Among Us in this fnf mode. You have to be better than Hayin impostor. In FNF vs Impostor V3 mode, you should sing much faster than other mods, I hope you are experienced from previous fnf mods. I wish you good luck in Fnf vs Impostor V3 game. You can play the game using the arrow keys.