Sudden Attack
| Sudden Attack | |
|---|---|
| Developer(s) | Nexon GT | 
| Publisher(s) | Nexon and Netmarble | 
| Designer(s) | Nexon | 
| Engine | LithTech Jupiter | 
| Platform(s) | Windows | 
| Release | 
 | 
| Genre(s) | First-person shooter | 
| Mode(s) | Multiplayer | 
Sudden Attack (Korean: 서든어택) is a free-to-play multiplayer first-person shooter online game developed by the South Korean company GameHi. The North American service for Sudden Attack was terminated on January 29, 2014. A sequel, Sudden Attack 2, was launched in 2016. By June 2020, the game had over 23 million registered users worldwide and grossed over $500 million in lifetime revenue. By December 2021, the game grossed over $600 million.