Sure! Here's an example of a simple quantum timeline game implemented as a single HTML file. It uses JavaScript and is enclosed in script tags:
In this game, the player's objective is to reach the target by moving the player object using the arrow keys. When the player reaches the target, a congratulatory message is displayed, and the game is reset.
Note: This is just a basic example to give you an idea. You can customize the game further by adding levels, obstacles, and more advanced gameplay mechanics depending on your requirements.