Sure! Here's an example of a simple rogue-like game implemented as a single HTML file using JavaScript. It is designed for smartphone operation and uses pictograms for graphics.
In this example, the game map is represented by a 2D array (`map`). The player is represented by a robot emoji (`
🤖`), walls are represented by square emojis (`
🔲`), and enemies are represented by alien emojis (`
👾`). The player can move using the arrow keys, and their movements are displayed on the screen.
Feel free to enhance and modify this code to make it a more complete and enjoyable game.