Sure! Here's an example of a simple fighting game implemented as a single HTML file using JavaScript:
This is a basic example of a fighting game where you have a player (represented by a red square) and an enemy (represented by a blue square) on a canvas. You can control the player's movement using the arrow keys on your smartphone. The game will continuously update and render the positions of the player and enemy.
Please note that this is just a starting point and the game logic, animations, and additional features are not implemented in this example. You can enhance the game by adding attack animations, health bars, scoring system, and more based on your requirements.