Another version of "Killer" is a "knock-out" game for three or more players (the more the better). To start, everyone has a pre-determined number of lives, (usually 5) and a randomly chosen player throws a single dart at the board to set a target (i.e. single 18) and does not play until that target is hit. The next player up has 3 darts to try and hit the target (single 18), if they fail, they lose a life and the following player tries. Once a player succeeds at hitting the target, they then become the target setter and throw a dart to set a new target. The initial target setter swaps places with the new target setter. The games carries on until every players' lives have been used, the last man standing is the target setter whose target was not hit. For less experienced players you can count doubles and trebles as part of the same number, i.e. a target of treble 20 can still be counted as a success if the double or single 20 is hit and vice versa.