Sure, here's an example of a simple game implemented in a single HTML file using JavaScript and enclosed in script tags:
You can save this code in an HTML file, open it in a web browser, and interact with the game using the provided buttons (⬆️, ⬅️,
🚀, ➡️, ⬇️). When you click on the spaceship button (
🚀), the green emoji character will transform into a dragon (
🐉). You can move the characters up, down, left, and right using the arrow buttons.