Sure! Here's an example of an "impossible" game implemented as a single HTML file using JavaScript. It is designed for smartphone operation and uses pictograms to represent the game elements.
This simple game starts automatically when the HTML is loaded. The player is represented as a white square, and the obstacle is shown as a red rectangle moving from right to left on the screen. The objective is to avoid a collision between the player and the obstacle by tapping on the screen to make the player jump. The game ends when a collision occurs, and a pop-up message will display the player's final score before the page reloads for a new game.
Please note that this is a very basic example, and you can enhance it by adding additional features, improving graphics, or incorporating more challenging gameplay mechanics.