Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript. The game is called "Scary Automatic Venom." It's a text-based game with simple choices represented by pictograms.
To play the game, simply open the HTML file in a web browser on your smartphone. Each game state presents a message and choices represented by pictograms. By tapping on a choice, the game state is updated based on the chosen option until you reach a win or game over state.