Krunker.io (or simply “Krunker”) may just be the most popular first-person shooter (FPS) that most of the general public has yet to hear about. The game hit 50 million UNIQUE players back in July of 2019 as mentioned by Sidney De Vries, the creator of Krunker.io. By now, the number of unique players is likely between 80 million and 100 million. But what exactly is it?