In Undertale, having a "Fun Value" set to 56-57 will play the "Wrong Number Song Call".

The answer is False because in Undertale, having a fun value set to 5657 will not play the wrong number song call. The fun value system in the game controls various random events and encounters, but it does not specifically trigger the wrong number song. This song is triggered by interacting with certain objects and characters in the game, unrelated to the fun value. Therefore, setting the fun value to 5657 will not result in playing the wrong number song.