Call of War Duty: FPS Gun Game is a fast-paced, first-person shooter (FPS) game that allows players to play the game offline and online.

The offline version of the game is designed for players to explore the game's story and missions without the need to connect to the internet. The game's missions and maps are designed to be accessible to players who do not have an Internet connection, and players can progress through the game's story and missions regardless of whether they have an Internet connection or not.

The game's story takes place in the future, and the main character is a mercenary who is hired to complete missions for various organizations. The game's plot is based on the idea that the world is becoming a more dangerous place, and the main character is hired to complete missions for various organizations, including the army, the police, and the mob.