place Sans,Papryus or Gaster to defend the underworld from the souls click the arrow button to go to next wave ( top left ) Instructions at Bottom Love and Favourite to get free 500 gold Challenge! Try not to use Gaster! Press 1 to turn off sounds press 1 again to turn on Press 2 to mute music, press 2 again to turn on Press space for random song there are 21 songs.
