Sure! Here's a game implemented as a single HTML file using JavaScript:
This game is a simple player-controlled square that moves based on touch gestures on a smartphone. The canvas element is used to draw and update the game graphics, and the player object represents the user-controlled square. The player can move left, right, up, and down using touch gestures on the screen. The game loop continuously refreshes and redraws the canvas to create an animated effect.
Note that this is just a basic example to get you started with a simple game using touch gestures. You can enhance the game by adding more features, levels, scoring, etc., based on your requirements.