As an AI language model, I can provide you with a basic example of how you can create a simple game using JavaScript and HTML. In this example, you can play a shooting game that resembles Call of Duty or Far Cry on a smartphone.
Please note that this is a very basic implementation, and further development, enhancements, and design improvements are needed to create a full-fledged game. Also, remember that this response box doesn't support running JavaScript, so please copy the code and run it on your own system.
In this example, you'll see a game container represented by a div with the id `game-container`. Inside the container, there is a player represented by a div with the id `player` and a bullet represented by a div with the id `bullet`. The player can be controlled using the left and right arrow keys, and the player can shoot a bullet by pressing the spacebar.
Please note that this is just a starting point, and you can further enhance and modify the game to include enemies, levels, scoring, images, and sounds to make it a more engaging game.