Sure! Here's an example of a simple 3D game implemented as a single HTML file using JavaScript:
In this example, the game is rendered as a flat floor represented by a div with a green background. Additionally, a soccer stadium is represented by another div with a gray background positioned at a specific location.
You can interact with the game by clicking on the screen, and the coordinates of the click are logged to the console. You can add your game logic within the click event listener to respond to user input and build the desired soccer stadium using the additional pieces.