After several months of beta testing, publisher Gamehi has announced that the Korean created free-to-play FPS Sudden Attack is now officially open for business in the US. The game, the latest in the glut of games in this genre, is supposedly the most popular such game in its native Korea.

While free to play, Sudden Attack does have a virtual store where players can purchase new weapons, ammo, items, bonus experience points and more. The US launch of the game also adds two new maps (Gate Way and Club Night) as well as new weapons such as the FAMAS T1 and the Gurkha Knife. More content updates are promised for the game in the months ahead.