Sure! Here's an example of a game using JavaScript within a single HTML file, where a block bounces off walls and increases its speed and size by 5% each time. The game uses pictograms and is designed for smartphone operation.
Note: This code assumes that you have a bounce sound file named "sound.mp3" in the same directory as the HTML file. Please make sure to replace the `bounce.mp3` with your own sound file path or URL.