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 moving through a tunnel-like environment. The player is holding a gun and shooting at enemies that appear in front of them. The game's graphics are realistic, with a focus on the player's perspective. The player's movements are smooth, and the shooting is precise. The game's interface is visible on the screen, with various buttons and indicators for the player to interact with.