limbicsystem writes: A new publication in the journal PLOS ONE shows that your rank in League of Legends (LoL) correlates with your intelligence quotient (IQ). Games like LoL and DOTA II apparently depend on the same cognitive resources that underlie tests of fluid intelligence. That means that proficiency in those games peaks at the same age as raw IQ -- about 25 -- while scores in more reaction-time based games like Destiny or Battlefield seem to decline from the teens onwards. The researchers suggest that the massive datasets from these online games could be used to assess population-level cognitive health in real-time across the globe. The authors have a nice FAQ (and open datasets) here.