Here's an example of a simple game implemented as a single HTML file using JavaScript. The game involves a player navigating through obstacles to reach the end goal. Please note that pictograms are not used in this example, but you can modify and enhance it as per your requirement.
In this game, the player (represented by a blue square) can be moved using the arrow keys on a smartphone. The obstacles (red squares) are randomly placed on the screen, and the goal (green square) is located at the bottom right corner. The game checks for collision when the player touches any of the obstacles and detects when the player reaches the goal. The collision and goal events can be further customized based on your specific game logic.