For the first time, more than 1 million people played Dota 2 at the same time this weekend.

The MOBA is the most popular game on Steam, usually attracting more than twice as many players as Counter-Strike: Global Offensive, and 10 times more than the next most popular games.

The highest ever concurrent users for Steam was 8 million, which occurred on January 1 this year.

Outside of the Steam ecosystem other games have proven even more popular. The most ever concurrent players of League of Legends was 7.5 million, and VG247 points out that World of Warcraft has passed 1 million players on its Chinese servers alone.