Sure! Here's an example of a simple Ben 10 game implemented as a single HTML file using JavaScript and enclosed in script tags:
Ben 10 Game
Click on the Omnitrix to transform into a different alien!
To play the game, simply open the HTML file on a smartphone or in a web browser. When you click on the Ben 10 image (or Omnitrix), it will randomly select an alien from the available options and display the selected alien's image. It will also show an alert message with the name of the transformed alien.
Note: This example assumes that you have the relevant image files (ben_normal.png, heatblast.png, xlr8.png, four_arms.png, etc.) in the same directory as the HTML file. You can replace these image filenames with your own images, and also add more aliens to the `aliens` array if desired.