Sure! Here's a simple implementation of the classic game Snake, with a title screen, settings, modes, a level-up system, and boss battles at certain levels. The game is designed for smartphone operation and incorporates pictograms for better visual experience. The mobile controls allow you to control the snake's movements. The game starts automatically once the HTML file is opened.
Please note that this is just a basic template to get you started with the game. You would need to add more functionality, graphics, and logic to make it a fully-featured and interactive game. Feel free to modify and enhance this code according to your specific requirements.