Sure! Here's an example of a simple game called "The Shampoo Adventure: Beat the Shampoo Dispenser in Mount Rushmore 2!" implemented as a single HTML file with JavaScript:
In this game, the objective is to control the player (represented by a blue square) and reach the shampoo dispenser (represented by a red square) without colliding with any obstacles. The player's movement can be implemented using smartphone touch events. Once the player collides with the shampoo dispenser, a congratulatory message will be displayed, indicating that the player has beaten the game.
Please note that this is a very basic implementation and can be expanded upon to add more features, levels, and animations.