http://news.bbc.co.uk/sport1/hi/other_sports/world_darts_2004/3334207.stm
her er den så... kør lidt ned og der står den
Killer
A game for any number of people from two to 20 - the more the merrier - and one that helps players with double trouble.
Having decided upon a starting order playing diddle the middle, closest to the bull, players throw left handed to determine their number to aim for. No two players can play the same number in one game.
A player must hit his double to become a killer and can then start the business of taking lives from other players by scoring in their double.
Players start with three lives and the winner is the last player left with a life.