Search Trends of Google
Insight on what’s popular
But only relative
The popularity of the Action Real Time Strategy (ARTS) or MOBA games have shifted around between two main contenders ever since the genre took off with DotA (Defense of the Ancients) in 2004–2005 as the popular Warcraft 3 mod and picked up as standalone games due to their popularity. Now there are only two contenders for the most popular ARTS/MOBA games, League of Legends and DotA 2.
What I originally set out was to see how popular these two franchises are because in the US and much of the gaming communities that I frequent, there is a very strong influence of League of Legends and Riot Games over DotA 2 and I wanted to see if this was persistent across other areas of the world.