As an AI language model, I can provide you with the necessary code to create a simple game using JavaScript enclosed in script tags within a single HTML file. Here's an example of a basic game called "Pictogram Match" that you can play on a smartphone:
This code creates a game where you need to match pairs of pictograms. Clicking on each pictogram reveals its symbol, and if you find a matching pair, they remain on the screen. The game logic is implemented using JavaScript, and the pictograms are represented using Unicode characters.
Feel free to modify and enhance the game as per your requirements. Enjoy!