Sure, here is a simple coin simulator game implemented as a single HTML file using JavaScript:
Coin Simulator
In this game, there is a single coin image displayed on the screen. When you tap on the coin, a random result (either "Heads" or "Tails") is generated using the `Math.random()` function. The result is then displayed below the coin image.
You can save this code as an HTML file and open it in your browser to play the game. Each time you tap the coin, you will see the result of the coin flip.