The video shows a person playing a game on a mobile device. The game appears to be a side-scrolling action game with a character that moves from left to right. The character is seen fighting various enemies, including a large green monster and a group of smaller creatures. The gameplay involves the character using different moves and abilities to defeat the enemies. The game's graphics are colorful and cartoonish, with a vibrant background and detailed character designs. The player's thumbs are visible on the screen, indicating that they are controlling the game with touch inputs.