It already happened in 2013 to a young fine fellow who was playing a variant of the game that uses a stun gun. He lived and says that it was a mistake to be playing that game..."Is it bad to look forward to the day when someone successfully "stops the threat" in the act?"
http://www.huffingtonpost.com/2013/11/2 ... 23723.html
Sorry to use Huffpo as a source - they had the best coverage of it I could find in a few minutes.