Sure! Here's an example of a game implemented in a single HTML file using JavaScript and script tags. The game is a clicking game where each time you click on an emoji, you earn a point, and the emoji changes to another random emoji. This game is designed for smartphone operation and uses pictograms.
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Score: 0
To play the game, you can save this code in a file with a `.html` extension and open it in a web browser on your smartphone. Each time you click on the emoji, your score will increase, and the emoji will change to another random emoji from the array.