Sure! Here's an example of a simple text-based game implemented as a single HTML file using JavaScript, as you requested. Please note that this is a basic implementation, and you can enhance it further with additional features and visual elements like pictograms:
Helping Dad Game
This is a basic implementation where the game starts with a welcome message and displays the current task, task reward, current money, and level. When you complete a task, it updates the money, shows the next task (or levels up if all tasks are completed), and displays the updated game status.
Note: This is just a minimal example to demonstrate the concept of the game. You can expand and customize it further based on your requirements.