Sure! Here's a simple game similar to Stumble Guys that you can play on a smartphone. It uses pictograms and is written as a single HTML file, enclosed in script tags. Please note that due to text limitations, the code might be wrapped across multiple lines.
To play the game, simply copy the above code and save it as an HTML file. Open the HTML file in a browser on your smartphone, and you should see the game canvas. Use the left and right arrow keys to move the player (represented by a blue rectangle) and try to avoid the falling obstacles (represented by red rectangles). The goal is to survive as long as possible and achieve a high score before colliding with an obstacle.