Genre : FPS Client : Nexon Date : 2016
- <Sudden Masters> campaign is a large-scale winter update campaign for Sudden Attack, the nation's top FSS game.
- The campaign employed as the masters of Sudden Masters and main characters the celebrities Lee Si-Young, Nara, Nana, Twice, Solbin and Gyungri to lead the capabilities attainable from the update to be mastered by the users.
- The users' interest has been expanded through the six large-scale updates using such celebrities.