The game contains a full fledged campaign in which the player has to complete a range of missions of different capacities. Some of the missions are not thoroughly shooting ones and the player has to sneak up on his enemy at times.
The campaign starts with the player rescuing a fellow agent who was held by the enemy. The player has to scout the area of action at different times during the game and also make use of stealth to accomplish the challenging missions. A wide range of weapons which include RPGs, sub-machine guns, pistols and rifles are available for the player to use. Selling millions of copies, Project IGI 3 is surely one of the best first person shooter games created.