The latest figure for monthly active League of Legends players worldwide is in, and it’s a big one. Riot Games estimates over 100 million players actively play each month.

The most recent figure available, from a few years ago, was an estimated 67 million monthly players. For comparison, competitor Valve announced in June that Dota 2 has over 13 million monthly unique players.

We grew a lot faster than we ever expected to; there’s this longstanding joke that we had to build the plane while flying

The idea that a lot of people would be pumped on that kind of experience was certainly something we didn’t predict. We’ve actually had to sort of react to ‘Wow, there’s a lot of folks who are comfortable with this uncompromising game that wouldn’t spend an ounce of time on single-player or campaign.’ It was all about pouring everything we could into that competitive experience to make it as good as it could possibly be. We’ve kind of been in a reactionary mode. Just like, holy crap, the game is getting really big and we have to keep up with the demands of our players.

If there was any doubt before today, League of Legends is definitely the most popular PC game in existence.

League of Legends also has one of the largest followings in the esports scene, with leagues all over the world pulling thousands of fans to stadiums and hundreds of thousands or even millions more viewers online. Worlds 2015 — the series world championships — saw 4.2 million average concurrent viewers.

The game came out in 2009 and has been steadily growing its gigantic audience. So far, League is Riot Games’ only title, and the developers have been continuously updating it with new champions, gameplay tweaks, and meta shifts to keep things from getting stale — even if it occasionally upsets players and fans.