Sure! Here's an example of a survival game implemented as a single HTML file with JavaScript, enclosed in script tags:
To play the game, you can copy the above code into a text editor and save it with a `.html` extension (e.g., `survival_game.html`). Then, open the file in a web browser on your smartphone. The game will start, and you can control the player using arrow keys or touch events based on the implemented functionality.
Please note that this is a basic template for a survival game, and you can add more features and graphics according to your requirements.