Sure, here's an example of a simple game where you control a character being chased around the screen by enemies. The game will be playable on a smartphone and will use pictograms for the visuals.
This HTML file contains a basic game where you control a character represented by a running emoji (🏃). The character can be controlled by touching the screen on a smartphone. The objective is to avoid colliding with the enemies represented by different pictograms (👹, 👻, 🐉).
If the character collides with any of the enemies, a "Game Over!" alert is shown, and the game restarts. This game can be played on a smartphone by opening the HTML file in a mobile browser.