The Kill-o-Meter tells the player the total number of Pygmies he or she has killed. If the player is committing sacrifices, the meter will sometimes pop up and show that the number on the Kill-o-Meter is rising. Of the player's friends, the person with the highest number of kills on the Kill-o-Meter is at the top of the weekly leaderboard.
- Its name is a pun for kilometer.
- If the mouse pointer remains at the Kill-O-Meter, it will stay there longer until you drag it away.