Sure! I've created a simple text-based game based on Denji's life from Chainsaw Man. Since it needs to be implemented as a single HTML file enclosed in script tags, I've included a template below that you can use. It uses JavaScript to control the game logic.
To play the game, you can copy the code above and save it as an HTML file (e.g., `chainsawman_game.html`). Then, simply open the HTML file in a web browser. The game will start, and you can follow the prompts, make choices, and experience Denji's story.
Please note that since this is a text-based game, it doesn't include pictograms or any fancy graphics. It uses JavaScript alert boxes to display the story and choices, making it suitable for smartphone operation.