The scientific explanation I would be most likely to accept is the fact that neurons in our brains send information via electrical impulses, i.e firing of the synapses. I would assume these signals are able to be interpreted by the program...
Spent hours with a team killing these monsters, lots of fun. Did find out, the hard way, that they don't like healers too much. Those snowmen know how to chunck a snowball. Hope to see some more before the winter event is over.