Sure! Here's a simple game where a camera spins around a round ball, and the ball gets smaller and smaller until it eventually explodes. The game is developed as a single HTML file, enclosed in script tags, using JavaScript. To keep it smartphone-friendly, I'll use icons/pictograms to represent the ball and explosion.
To play the game on a smartphone, you can open the HTML file using any mobile browser, and it will automatically start the game. The round ball will spin, continuously getting smaller until it explodes completely.