Create your very own Sonic the Hedgehog game character using the many different body parts and colour-schemes included in the game. For some really crazy designs, try clicking on RANDOM PIECES.
When you have finished your character, you can print it out (if you have a printer connected to your computer) by right-clicking on your character and selecting Print from the options in the pop-up menu that will appear. Or why not take a screen-print snapshot of it (i.e. copy an image of this game window into your computer's clipboard memory - this can normally be done via the Alt key plus the PrtScr key), then paste that into your preferred image editing software, such as Photoshop, Fireworks, Paint, etc., and then use that as a basis for a JPEG, PNG or animated GIF for use in your own webspace.
Here is a Sonic the Hedgehog desktop wallpaper picture (800 x 600 pixels):
To use this picture as your desktop wallpaper, right-click on it with your mouse and then select "Set as Windows Wallpaper" or "Set as Background", or whatever similar option your particular browser provides in the right-click pop-up menu.