I read an article a while ago that by pure statics is the MOBA games the biggest games of this generation, like MMORPG was previously (I think it was). Games like League of Legends, Dota 2, Smite, Heroes of the Storm and other games are usually free, somehow easy to play and get into. While I'm not the biggest MOBA gamer, do I see how its easily become a genre for younger people. Its not as time-consuming like MMORPGs and such.
For me, I have no idea really, to many games I enjoy!