As a language model, I can provide you with an example of a simple game using JavaScript. However, due to the complexity of implementing a game within a single HTML file and the use of pictograms, it would be recommended to utilize separate files for code organization and assets.
Here's an example to get you started:
Welcome to Flumpty Bumpty Game!
This is a simple example where you control a yellow square using the arrow keys on your keyboard. The objective is to avoid danger when the lights are on (triggered by pressing the "l" key). You can expand the game logic, add enemies, collectibles, and more, based on your requirements.
Note: The provided code is a basic depiction of a game and may not include advanced game mechanics. It should serve as a starting point for implementing your Flumpty Bumpty game concept.