Sure, here's an example of a simplified game implementation called "Movie Theater Tycoon" that focuses on upgrading your popcorn, adding more seats, movies, and managing the theater. Please note that this is a basic implementation and can be expanded further for a complete game experience.
This is a basic implementation in a single HTML file using JavaScript within the script tags. The theater object holds the game data such as popcorn upgrade level, seat count, movie count, customer count, and more. Functions are created to upgrade various aspects of the theater and log the changes to the console.
Please note that this is just a starting point and can be enhanced further with user interactions, visuals, and more game mechanics based on your requirements.