Tencent also is the majority interest of Riot Games. Riot Games is the creator of League of Legends which is probably the biggest selling game right now.
Candy Crush likely still owns the distinction of the biggest game when it comes to on-going revenue generation. King Digital did $2.2 billion in sales last year ($586m last quarter), almost entirely on Candy Crush. Estimates put League of Legends at the $1 billion ballpark for 2014 (up from $624m in 2013).