Sure! Here's an example of a simple maze game implemented as a single HTML file using JavaScript:
In this game, you control the player (represented by a blue square) using the arrow keys on your smartphone. The objective is to find the "closet" (represented by a green square) while avoiding the enemy (represented by a red square). You can hide from the enemy by moving into the closet. If you get caught by the enemy, the game will be over and you can reset it to start again. Once you find the closet, you will be alerted with a message.