Sure! Here's an example of a tornado chasing game implemented as a single HTML file with JavaScript. It uses pictograms as requested. You can copy the code and save it as an HTML file to play the game in your smartphone's browser.
To play the game, open the HTML file in a web browser on your smartphone. You can use the arrow keys to move the car (
🚗) forward, backward, and rotate left and right. Press the spacebar to deploy the car. Try to intercept the tornadoes (
🌪️) that randomly appear on the map to gain points. If you fail to intercept a tornado, the screen turns black for 5 seconds before the game restarts. The current score is displayed at the top right corner of the screen.