Quick answer: Players claim a number, earn killer status by completing the agreed hits, then remove opponents’ lives by hitting their numbers.
Assign each player a unique number
Have players throw one dart with the non-dominant hand, or throw with the board numbers temporarily hidden. The numbered wedge hit becomes that player's number. Bulls and duplicate claims are rethrown. This random method prevents a strong player from simply choosing a favorite double. Write each name, owned number and starting lives on the scoreboard.
For a faster family game, assign numbers by draw. Choose a range that gives every participant a distinct target. Clarify whether the entire wedge or only the double matters during each phase; common Killer uses doubles, but casual versions use any bed.
Become a killer before attacking
In the familiar double-based version, a player must hit the double of their own number to receive a K. Until then, hits on other players do nothing. Some groups require three marks on the owned number instead, with singles worth one, doubles two and triples three. Both work, but mixing them creates confusion.
Once active, the player uses later darts—including remaining darts in the activation turn if the house rule permits—to attack. State that same-turn rule up front. Allowing immediate attacks speeds the game; requiring the next visit gives opponents a guaranteed response.
Remove lives and eliminate players
A killer removes a life by hitting the agreed scoring bed of an opponent's number. If doubles are required, single and triple hits do nothing. When a life total reaches zero, that player is eliminated and their number becomes inactive. Continue until one player remains.
Decide whether multiple hits in one turn remove multiple lives. Most lively versions allow it, so three doubles could eliminate a player with three lives. Also decide what happens when a killer hits their own number. A common penalty removes one of the killer's lives, preventing careless throws and adding risk when adjacent targets belong to rivals.
Manage alliances and target selection
The strongest player is not always the correct first target. A player with one life but no killer status may be less urgent than a killer with three lives and a nearby double. Read the scoreboard before throwing. Eliminating one threat can be better than spreading single hits across several opponents.
Temporary alliances are part of the social game, but no one should throw out of order or alter another player's darts. Strong players can aim at the side of the double away from their own adjacent number. When protecting a lead, remove the player most likely to become active next rather than chasing revenge.
Use variants for mixed-skill groups
Beginner Killer can count any hit in the owned wedge for activation and attacks. Mark-based Killer lets singles, doubles and triples remove one, two and three lives, which rewards ring accuracy but can end suddenly. Blind Killer hides ownership on the scoreboard and introduces deduction, though one scorekeeper must track identities.
Handicap by giving beginners more lives or letting them activate with a single while experienced players need a double. Keep safety strict: eliminated players remain behind the line, and nobody approaches the board until all three darts are complete.
Turn the answer into a better game
Use the relevant tool or playing guide next instead of leaving the answer on the screen. You can play the Road to the Crown darts game, measure a lane with the setup calculator, or return to our dart boards homepage to compare board types and plan a complete setup.
Frequently asked questions
How many players are needed for Killer darts?
Three or more is ideal. Two can play, but the politics and target choices that distinguish Killer are much richer with a group.
Can a killer lose a life by hitting their own number?
That is a common house rule, not universal. Decide and display it before the game.
Can you attack on the same turn you become a killer?
Many groups allow remaining darts to attack immediately; others delay attacks until the next turn. Either is valid when agreed in advance.
The Throw Lab verdict
Killer succeeds when the variable rules are made explicit. Assign unique numbers fairly, define the activation bed, choose the number of lives and state whether self-hits and same-turn attacks count. Then the game becomes a clear contest of double accuracy and threat management rather than an argument over house customs. Beginners can use whole wedges or extra lives, while experienced groups can keep the narrow doubles and self-hit penalty. The best tactical approach is concentrated: activate efficiently, identify the most dangerous opponent and finish that target instead of creating several lightly wounded rivals.