Sure! Here's an example of an incremental game implemented as a single HTML file using JavaScript:
In this game, the player starts with a score of 0 and can increment the score by clicking a button labeled "Click Me". The score is displayed and can also be increased by automating the increment process using a timer.
There is also an upgrade button labeled "Upgrade Click" that increases the click value by 1. This upgrade costs 10 points and can only be done if the player has enough points.
The game starts automatically when the page is loaded.