Sure! Here is a simple game using JavaScript and pictograms. Copy the code below and save it as a .html file. You can run this file on your smartphone browser to play the game.
Block Game
In this game, you control a block using arrow keys on your smartphone. The block moves in the direction you press, and it continues to move in that direction until you change its direction. The goal of the game is to navigate the block without hitting the boundaries of the canvas.