Sure! Here's a simple text-based game where you play the role of a helper, assisting people and animals in need. Since it needs to be implemented as a single HTML file with JavaScript, I'll provide the complete code below:
In this game, each time you run it, a random task/action will be selected from the predefined list of actions (stored in the `tasks` array). The game will then display a message depending on whether the task involves helping a person or an animal.
You can modify the tasks array or add more actions as per your preference. Additionally, you can enhance the game by integrating pictograms or even developing a graphical interface if desired.