DFC Intelligence and Xfire are reporting that Riot Games’ League of Legends was the most played PC title of the past 12 months, seeing nearly 1.3 billion hours logged during that time. World of Warcraft had roughly half the time spent on it over the past few months with 622 million hours, and Minecraft halving the total hours again stil to 371 million hours, followed by Heroes of Newerth (an Action real-time strategy title like League of Legends) at 184 million hours and the recently released Diablo III at 172 million hours.

“The fact that online games such League of Legends eclipsed more than a billion hours of online game time in a year is simply incredible, and a testament to the fundamental shift currently sweeping through the games industry,” said David Cole, CEO, DFC Intelligence. “By comparison, Bungie recently announced that the Halo franchise surpassed two billion hours of online play, but that’s over a period of seven years.”

As for the rest of the list, it’s filled out with Battlefield 3 at 171 million hours, MapleStory with 165 million hours, StarCraft II at 163 million hours, World Of Tanks with 145 million hours and finally Call of Duty: Modern Warfare 3 at 126 million hours.