Sure! Here's an example of a simple walking game implemented as a single HTML file with JavaScript:
🚶
⬆️
⬇️
⬅️
➡️
This walking game uses pictograms (
🚶) to represent the player. You can control the player's movement by tapping on the directional buttons (⬆️⬇️⬅️➡️) on the smartphone. The player will move 10% of the screen's height or width in the corresponding direction every time a button is clicked.