Sure! Here's a simple parkour game implemented as a single HTML file using JavaScript and enclosed in script tags. The game is designed for smartphone operation and uses pictograms for visual representation. You can play it after implementing the game logic.
To play the game, simply copy and paste the above code into a new HTML file, save it, and open it in a web browser on your smartphone. You can control the player character using the arrow keys or swipe gestures on your smartphone screen.