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:
This game involves controlling a player (represented by a player pictogram) on a canvas using touch events on a smartphone. The goal is to collect falling particles (represented by white rectangles) to gain points, while avoiding letting the particles fall out of the screen. The score is displayed at the top left corner, and the game ends if the score goes below zero.
Feel free to customize the game further, such as adding different pictograms, adjusting particle spawn rates, adding sound effects, or improving gameplay mechanics.