If anyone in a clan performs an action in that period – e.g. The system works on a periodic scoring system. Keep in mind that it’s always a chance, not a guarantee. It won’t happen automatically when you go over the threshold, but as long as your Purge activity score is above it, there’s a chance for it to happen. Once it reaches the first line you can be attacked by a Purge. As you play the game (gather resources, build, kill NPCs, explore the word) it will start to fill up. If you open up your inventory, you’ll see a bar beneath your character. In single-player games they are turned off by default and need to be turned on in the server settings. The Purge is considered a PvE feature and could attack you on any official servers. The difficulty of The Purge will depend on where you’ve built and the server settings. The Purge is when hordes of NPCs come to attack your base to destroy you and your buildings. Hopefully this will give you a better understanding of this game mechanic. We get several questions related to The Purge from players so we wanted to take a moment to run down exactly what The Purge is and how it works.