Sure! Here's an example of a game based on the concept of the Backrooms using JavaScript and pictograms. Please note that this is a basic implementation and can be expanded upon to add more features and complexity.
This game allows you to control a player character (represented by a walking pictogram) using the arrow keys on your phone. The player is placed in a never-ending maze-like environment called the Backrooms. The aim is to navigate through the hallways (gray areas) while avoiding the monsters (red emoji).
Feel free to expand upon this code to add more features, levels, and gameplay mechanics as needed.