In the video, a person is holding a smartphone with a green case and playing a game. The game appears to be a first-person shooter, and the person is using their thumbs to control the game. The game's graphics are colorful and detailed, with a dark background and brightly colored characters and objects. The person's thumbs move quickly and accurately, indicating that they are skilled at the game. The game seems to be fast-paced and action-packed, with the person shooting at enemies and moving around the game environment.