If you ever played Undertale, you probably remember Sans, a charming skeleton whom you can meet on the expanses of the mysterious monster kingdom. In this FNF mod he’ll be your new opponent! And even though he’s bare bones without the smallest patch of skin on them, he isn’t going to give up that easily. You’ll have to sweat trying to catch the rhythm of the song with your fingers and struggling not to miss a single note. Let the battle begin!