As an artificial intelligence language model, I can provide you with a starting point for creating a game using JavaScript in a single HTML file. Below is a simple example of a game where you can interact with a sheep peeking on the screen using pictograms.
In this game, initially, you will see a sheep icon on the screen. When you tap/click on the sheep, it will switch between a peeking sheep (
👀) and a hidden sheep (
🐑). You can extend this example and add more game logic, levels, and features as per your requirements.