The video shows a person playing a first-person shooter game on a smartphone. The game appears to be set in a war-torn area with buildings and debris scattered around. The player is holding a gun and moving around the environment, aiming and shooting at enemies. The game's graphics are realistic, with detailed textures and a high level of detail in the environment. The player's movements are smooth, and the gameplay is responsive to touch inputs. The game's user interface is visible on the screen, showing the player's health, ammunition, and other game-related information.