As an AI text-based model, I can provide you with instructions on how to create a simple text-based game using JavaScript embedded within an HTML file. Here's an example:
To use this code, you can save it as a `.html` file and open it in any web browser to start the game. Upon opening, it will prompt the player to enter their name and then begin the game. This example demonstrates a basic battle scenario where the player and enemy take turns attacking each other until one of them runs out of health.
Note that this is just a simple text-based game example to get you started. You can expand upon it by adding more features, animations, or graphics using HTML and JavaScript based on your game's requirements.