League of Legends world's most-played game, Riot Games says

Every month more than 32 million unique players log into the multiplayer online battle arena game, and their hours spent laning, farming, and ganking add up to more than a billion monthly. For some perspective, the entire Halo series has amassed somewhere in the neighborhood of 2 billion hours of online play since Halo 2 in 2004.

Riot Games also revealed a little bit of demographic data, showing some stark homogeneity in the community. More than 90 percent of all League of Legends players are male, 85 percent are between 16 and 30, and 60 percent are enrolled in or have completed some college.

By our math, that means every dude in every college class with a laptop is actually playing League of Legends instead of taking notes on the Coriolis effect.