Seven Knights was released in 2014 in Korea and 2015 in global. Independent Japanese and Chinese servers would also later be released. It's a 3D mobile game with nice graphics and an entertaining storyline. The Korean version has constantly been in the top 20 grossing mobiles games in Play Store and IOS store.
The Korean version is currently in season 4 of the story, global (now called New World) is in season 3.