Sure! Here's an example of a simple game where you can jump on clouds without falling. It's implemented as a single HTML file and contains JavaScript code enclosed in script tags. You can play it on a smartphone or any web browser.
To play the game, you can copy the above code into an HTML file (e.g. `game.html`) and open it in a web browser (or on a smartphone). The game will show a canvas where you can jump on the blue clouds as the yellow player. Use the spacebar (on a physical keyboard or a virtual one on a smartphone) to make the player jump. Try to jump on the clouds without falling down!