Sure, here's a simple game implemented as a single HTML file using JavaScript. It is a traffic light game where you have to tap on the green light to survive and avoid tapping on the red light.
Traffic Light Game
In this game, there are three traffic light pictograms: red, yellow, and green. The player's goal is to tap on the green light to survive and avoid tapping on the red light. Tapping on the red light triggers a game over message, while tapping on the green light proceeds to the next level. The game randomly determines which light should be clicked at each level.
Note: This game is designed for desktop and mobile browsers, including smartphones. However, it is not specifically optimized for a smartphone's touch operations.