As a programmer, I can create a game for you using JavaScript enclosed in script tags in a single HTML file. The game will be designed for smartphone operation and will use pictograms if possible. Here's an example of how the code structure would look like:
Leaf Count Game
In the code above, the game consists of a leaf count displayed on the screen. The player can choose to remove or add leaves by clicking on respective buttons. The game will generate a random initial leaf count and update the UI accordingly using JavaScript.