The game crossed 11 million unique players after almost 4 years.
Dota 2 reached 900k concurrent players just a couple days ago, a feat it had not achieved in a long time. However, it's important to note that it is still a bit short of its all time high of 1.29 million players.
The game reached another milestone yesterday, when it reported that there had been 11,051,574 unique players in the last month alone.
The last time Dota 2 reached this huge number was in March 2015, when it crossed 11 million players. Usually Dota 2 averages around 9 million to 10 million unique players every month. This means that the game has seen an increase of 1 million players.
According to various reports, this can be credited to Dota Auto Chess. The arcade mini-game is reportedly becoming one of the reasons why new players are downloading Dota 2. Many Dota 2 personalities like BSJ are demonstrating the game on their YouTube and Twitch. In addition, Twitch even held a Dota Auto Chess tournament for streamers a couple of days ago. The tournament, called Twitch Rivals: Dota Auto Chess Champions, saw the likes of AdmiralBulldog and JakenBlake battling it out.
Another good cause is the new ranked season. Naturally, after the seasonal reset, a lot of players flock back into the game to calibrate their new medals. Not to mention the New Bloom event that is currently in full swing.
We can expect the game to see more players after the new hero, Mars, comes out later this month or in early March. The fans of the game have been waiting for the new hero since he was announced at TI8.