Sure! Here's an example of a simple game where you can mine blocks and defend yourself against attacking zombies. The game will be implemented as a single HTML file with JavaScript enclosed within script tags.
In this game, the player can move using the arrow keys and mine blocks by pressing the spacebar. The player's character is represented by a colored block, while the zombies are represented by red blocks.
Remember, this is just a basic example to get you started. You can build upon this structure and add more features, such as scorekeeping, spawning additional zombies, and more complex mining logic.