Both games have millions of active monthly players who play the game, but there is one clear winner. Dota 2 boasts around 13.5 million monthly active players as mentioned on their official blog statistics page. League of Legends on the other hand completely is definitely much more popular. From looking at the League player base, a few years ago the developers reported active monthly players of 67 million. Recently they announced LoL now gets over 100 million active players a month. That's a lot of players for an online game!