Sure! Here's an example of a simple game implemented using JavaScript and displayed in a single HTML file. This game allows you to control a character represented by a Minecraft block using smartphone touch controls:
In this game, the user controls a Minecraft block by touching and moving their finger on the smartphone screen. The block will follow the movement of the finger. The game is displayed using the Three.js library which allows rendering 3D graphics in the browser.
You can save the above code into a file with a `.html` extension and open it in a web browser to play the game. The Minecraft block will move according to your touch movements on the smartphone screen.