Sure, here's an example of a simple game implemented in a single HTML file using JavaScript and enclosed in script tags:
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In this example, the game consists of a simple click event. When the user clicks on the game canvas (represented by a div with an id of "gameCanvas"), the content of the div is updated to display a victory message using pictograms. The game is played on a smartphone as requested.
Note: This is a basic example to demonstrate the concept. A real game would require more complex game logic, interactions, and visual elements.