Sure, here's an example of a simple game implemented as a single HTML file using JavaScript:
In this game, you play as a character represented by a blue square (pictogram) escaping from an animatronic (Fredbear) represented by a red square (pictogram). The animatronic moves towards the player, and the player's objective is to avoid being caught. If the animatronic reaches the player, the game is over and a "Game Over!" message is displayed on the canvas.
You can run this code by saving it as a `.html` file and opening it in a web browser on your smartphone. You can touch the screen to restart the game after it's over.