The bloodier key is an item that is automatically placed in the player's inventory when they kill another player when there are five or less players remaining during a game of Last Man Standing.

The key allows the player to re-loot a chest/drawer/cupboard that has already been looted. Players are guaranteed to obtain food, and are given an increased chance of obtaining a top tier special attack weapon. Doing so consumes the key and fully restores the player's hitpoints. It will also slightly restore prayer points and special attack energy.