Sure! Here's an example of a simple text-based game based on the concept of the Backrooms, featuring monsters, infinite hallways, and rooms. Please note that this implementation does not include pictograms or extensive graphical elements, as it is a simple text-based game.
To play the game, save the above code into a single HTML file, open it in your preferred web browser, and follow the prompts provided. You can navigate the "backrooms" by choosing directions (north, south, east, and west) or choose "quit" to exit the game. Beware of encountering scary monsters along the way!