Sure! Here's an example of a simple platformer game based on the manga Berserk implemented as a single HTML file:
This code sets up a simple platformer game where you control the main character from Berserk using the left and right arrow keys to move, and the spacebar to jump. The objective is to navigate through different platforms without falling off or colliding with obstacles.
Please note that this is a basic example and can be expanded upon to include more features, levels, and graphics based on the specific requirements of the game.