Sure! Here's a simple game called "Crossy Road" implemented as a single HTML file, including JavaScript code. It's playable on smartphones and utilizes pictograms. You just need to copy the code into a new HTML file, and you can start playing by opening it in a web browser.
Note: Replace the `background-image` URLs in the CSS with the actual URLs of pictograms you want to use for the player and the cars. Also, ensure that the `keydown` events are properly captured on the smartphone's browser or consider using touch events instead.