Being an operator of a stationary NATO machine gun in IS Defenseit is necessary to shoot back from the terrorist participants in the organization of ISIS, who got out of control in the alternative 2020. Whether the army of the North Atlantic Alliance will be able to keep the coast of the European continent from the invaders, or the whole world will be captured, and the objectionable are publicly shot for resistance and disobedience.

The IS Defense game developers intended to draw attention to the real situation in the Middle East and resurrect the genre forgotten by time, which showed himself perfectly in the Operation Wolf or Beach Head, giving it a modern look and picture. The main mechanics in this rail linear arcade shooting is a shooting of terrorists representing the Islamic state of Iraq and Lebanon, using a machine gun and a missile system. For murders, glasses are awarded that you can spend on the purchase of new equipment, armor and improvement of existing installations.

In total, 4 levels are represented, each of them has its own unique environment, the situation for tactical moves. Objects on the map are destroyed, explosions and flashes are constantly taking place, which add an action, but at the same time distract, from the main event. The first missions will be difficult to pass, you will have to spend more than one attempt to at least hold out for several minutes. But gradually, by upgrading the weapon and equipment used, you can reach a completely new level, sprinkling all the enemies in front of you.