The video shows a person playing a video game on a mobile device. The game appears to be a first-person shooter, with the player character holding a gun and moving around a house. The player character is seen entering the house, going upstairs, and looking out of a window. The game's graphics are realistic, with detailed textures and colors. The player character's movements are smooth, and the game's controls seem to be responsive. The video is shot from the perspective of the player, with the game's user interface visible on the screen.