Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript:
When you open this HTML file in a web browser, it will display a game where a 3D man (represented by a blue square) will walk forward towards a wood (represented by a brown rectangular block). The character moves 10 pixels forward every 100 milliseconds. Once the character reaches the wood, a message pops up saying "Woodcutting Complete!" and the game stops.
Note: This is a basic example to demonstrate the game mechanics. You can customize and enhance it further based on your specific requirements.