Certainly! Here's an example of a simplified version of the classic Mario Bros game implemented as a single HTML file using JavaScript:
Please note that this is just a template, and you would need to fill in the sections marked with comments (e.g., game logic, drawing functions, event listeners, game loop) to fully implement the game. It would require additional JavaScript code, including handling player input, displaying and updating game sprites (which can be pictograms), managing collisions, scoring, levels, and so on.
Creating a complete Mario Bros game is a complex task that goes beyond the scope of a simple response here. However, this template should provide you with a starting point for building your own version of Mario Bros using JavaScript and HTML.