A free app for Android, by D3..

In this FPS shooting game, you will fight against all kinds of enemies in order to save the world from an attack by a gang of terrorists. In the process, you will be armed with a variety of weapons, such as pistols, machine guns, sniper guns, grenade launchers, etc. 

You will be able to upgrade your weapons and improve their attributes, such as range, accuracy, and damage.

This FPS action game will let you play in a realistic environment. 

In addition, you will be able to fight against enemies in a variety of maps. These maps include urban areas, deserts, forests, mountains, etc.