Sure, here's an example of a simple game where you collect blocks and run away from an emoji. It's designed for smartphone operation and uses pictograms as graphics.
To play the game, you can copy the above code into a new HTML file and open it in a web browser on your smartphone. Use the arrow keys or swipe gestures (if your smartphone supports it) to move the player and collect the blocks. Avoid colliding with the emoji character. The objective is to collect all 10 blocks without colliding with the emoji.