Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript and pictograms. This game assumes smartphone operation and includes the functionality of spawning new balls each time a ball hits the pentagon.
When you open this HTML file in a web browser, you'll see a canvas where a green ball moves around. If you click/tap on the pentagon, the ball splits into two new balls. Each time you click on the pentagon, the number of balls will increase exponentially. You can continue playing the game by clicking on the balls and watching them multiply.