Sure, here's an example of a simple text-based game implemented as a single HTML file using JavaScript:
In this game, the player starts by searching for water to survive. After finding water, they can attempt to attack the robot base. The player's strength is initially set to 1 and decreases the robot base energy by that amount with each attack. Once the robot base energy reaches 0 or below, the game ends, and a victory message is displayed.
Note: This is a very basic implementation of a game and can be expanded upon to include more features, graphics, and interactivity based on your requirements.