Sudden Attack (Korean: 서든어택) is a free-to-play multiplayer first-person shooter online game developed by the South Korean company, GameHi. It is then followed by Red Banana (Japan), Asiasoft (South-East Asia), and Nexon (North America and United Kingdom). The game is released on July 21st, 2004 (Netmarble), July 6th, 2007 (Red Banana), 2008 (Asiasoft) and September 2009 (GameHi).
The year is 2010. The war in Middle Eastern that was started in the late 20th century has finally come to an end. Many of the international power involved in the war can no longer continue to fund the expenses for a long drawn out war for oil reserves. The major international powers decided to finally empower the U.N. (United Nations) with military force and resources, thus forming the UGF (United Great Force). The Tanziriro Republic resides in the resource rich region of Central Africa, yet strife with civil war. After several appeal to the U.N. by Energy Tech, a privately owned energy tech corporation, UGF was send in to stabilize the region. But the natural resources are in areas control by rebels, who call themselves the TLF (Tanziriro Liberation Front). A special UGF sub-unit codename “Silent Fox” was sent to infiltrate the rebel forces. All Silent Fox operations under John Hawk were highly successful, until their last mission. No one was sure what happen during the mission, but the 800+ personal strong special unit simply vanished from contact. A year later, the Silent Fox unit reappears still under the command of John Hawk, and much to everyone’s surprise, they begin working with the TLF to remove UGF from the Tanziriro Republic. Carlos Riviera, the commander for the UGF units in the region does not take the betrayal of John Hawk lightly. As the civil war rage on, both men spiral closer to a deadly confrontation.
There are two teams in the game, red and blue. Red is the Silent Fox corps while blue is the United Great Force (SA Anti-terrorist Police). Teams are then pitched into various types of gameplay matches in different maps such as Deathmatch, Mission, or custom battlefields (such as sniper-only, pistol-only or knife-only). Either team must satisfy the conditions, such as defusing the bomb, or successful planting and detonation, or achieving an amount of kills or round wins.
There are two types of currencies: Cash and Points. Cash is based on real money and can be charged in exchange for a monetary payment, cell phone billing, or home phone billing. Points can be earned from playing games. Points and cash can be spent at the in-game shop. Points are used for buying weapons. Cash enables the purchase of in-game boosts (i.e. +10% points) and special bonus items, along with special team-specific outfits (skins).
Nexon uses its NX Cash service for premium purchases.