Sure! Here's a simple implementation of a game featuring Sonic the Hedgehog using JavaScript. This code is contained within a single HTML file and can be run directly in a browser:
Sonic the Hedgehog Game
Please note that this code assumes you have an image file named "emozi_cat.png" in the same directory as the HTML file. You can replace it with any Sonic the Hedgehog image of your choice. Also, due to the simplicity of this example, keyboard controls are used instead of touch controls for smartphone operation.