Sure, I can help you with that! Here's a basic implementation of a Mario beta test game using JavaScript within a single HTML file. The game will be playable on a smartphone and will use pictograms whenever possible:
Mario Beta Test
In this implementation, the player (represented by the red square) can move left or right by swiping horizontally on the game container (black background). Additionally, the player can simulate jumping by tapping on the game container, which will briefly change the player's color to blue.
Please note that this is a very basic implementation and only handles player movement. You can add more features, levels, and obstacles to make it a complete game.