Sure! Here's a simple game implemented as a single HTML file using JavaScript. The game is called "Pictogram Shooter" and it involves shooting pictograms on a smartphone screen. The game uses touch events for interaction.
This game displays pictograms falling from the top of the screen, and the objective is to tap on them to score points. If a pictogram reaches the bottom of the screen without being tapped, a life is lost. The game ends when all lives are lost. The score and remaining lives are displayed at the top-left corner of the screen.