Sure, here's a simple game implemented as a single HTML file, using JavaScript and enclosed in script tags. The game is designed for smartphone operation and uses pictograms. The game is called "Picto Catcher" and the objective is to catch falling pictograms with a basket.
You can copy the above code and save it as a `.html` file. Then, open the file in a web browser to play the game. The game features a basket that moves horizontally with touch control and falling pictograms that need to be caught to increase the score.