 In May 2013 , Dota 2 reached almost 330 @,@ 000 concurrent players and held the record for the game with the most concurrent users in Steam history , breaking its own record set in March the same year . Simultaneous with this benchmark , it was determined that the concurrent number of Dota 2 players in May 2013 outweighed the number of players for the rest of Steam 's top ten most @-@ played games combined . In February 2015 , Dota 2 became the first game in Steam 's history to have over one million concurrent players . Also in 2015 , Dota 2 was the third most watched game on Twitch.tv , after League of Legends and Counter @-@ Strike : Global Offensive . Concurrent viewership numbers of professional Dota 2 matches have reached upwards of two million . 
