Following six months of beta tests, Riot Games released " League of Legends " as a Free-to-play game on October 27, 2009.[1][9] Their game designers and executives participated in online forums to make adjustments based on player feedback.[3] On May 10, 2010, Riot Games announced that they would take over distribution and operation of their game in Europe; to do so, Riot Games relocated their European headquarters in Brighton to new offices in Dublin.[10] In February 2011, Tencent invested 400 million us dollar for a 93 percent stake in Riot Games.[3][11] Tencent bought the remaining 7 percent on December 16, 2015; the price was not disclosed.[3][12]