Sure! Here is a sample HTML file implementing a simple maze game using JavaScript:
In this maze game, the player can use the arrow keys on a smartphone to navigate through the maze. The maze is represented as a grid, with walls (1's), empty cells (0's), a starting position (s), and an end position (e). The player's position is represented by a different colored cell.
When the player reaches the end position, an alert is displayed to congratulate them.
Please note that this is a simplified example and can be further enhanced with additional features if desired.