The video shows a person playing a first-person shooter game on a mobile device. The player is holding a gun and shooting at enemies in a room. The game's graphics are realistic, with a focus on the gun and the enemies. The player moves around the room, aiming and shooting at the enemies. The game's interface is visible on the screen, showing the player's health, ammo, and other game-related information. The player successfully hits the enemies, and the game's sound effects and music are audible.