Sudden Attack is an intense, free to play MMOFPS title published by Nexon, the same team behind other popular titles such as Atlantica Online and Vindictus. The United Governments is a feared bureaucracy that controls almost every aspect of daily life, using power and fear to rule over the world. The Tanzirilian Rebels were a small group of resistance fighters that gathered allies to form the Tanzirilian Alliance, a force dedicated to bringing control back to the people. Choose your side, pick from dozens of high power weapons, and fight to the death in one of the most action-based FPS experiences available online, Sudden Attack.

Sudden Attack provides players with one of the deadliest arsenals ever seen in a free to play FPS game, featuring over 40 distinct weapons in various categories. Whatever your preferred style of FPS play, there's weapons, equipment and secondary guns that are sure to match your play style. You can choose from iconic guns such as the AK-47, Famas and the legendary Druganov sniper rifle. As well as choosing your main weapon, you can also use secondary weapons and equipment from things such as pistol, knives, axes and explosives. The huge array of weapons on display gives players a huge variety of weapons to take to the battlefield.

One of the most innovative aspects to Sudden Attack is the achievement and medals system. As players perform various feats of valor during combat, they're rewarded with medals and achievements that can unlock a variety of interesting rewards such as access to new guns or equipment. Many of the medal and achievements also work in tandem with the games quest system, missions. There are dozens of unique missions to complete, from basic objectives such as killing enemy troops, to more advanced missions such as gathering intelligence or performing stealth-like recon.