Sure, here's a simple airplane game implemented as a single HTML file using JavaScript and enclosed in script tags. The game will be playable on smartphones and will use pictograms for the graphics. Please note that this is a basic implementation and can be expanded upon to add more features and improve the gameplay experience.
To play the game, open the HTML file in a web browser on your smartphone. The game canvas will show an airplane represented by a black rectangle. You can control the airplane's movement using the arrow keys. The airplane will move in the corresponding direction when you press the arrow keys.