In the video, a person is holding a smartphone and playing a game. The game appears to be a 3D running game where the character is running on a path. The person is using their thumb to control the character's movements. The game environment changes as the character progresses, with different obstacles and paths appearing. The graphics are colorful and vibrant, with a lot of movement and action. The person seems to be enjoying the game, as they continue to play and navigate through the different levels.