Certainly! Here's a simple implementation of a game inspired by the backrooms, using JavaScript within a single HTML file:
Backrooms Game
This game creates a grid-like environment where you control a player character (represented by a pictogram) using arrow keys on your smartphone. The objective is to find the exit door while avoiding monsters. You have a limited number of moves, and if you reach the exit, you win the game. If you encounter a monster, you lose the game.