We just made a new release of our site with Google Gadget support. You can now take The Picture Game as a Google Gadget and add it to your iGoogle page.

You can also add this gadget to your webpage. Use this page to configure The Picture Game. You can change the width and height as well as the font size.
As an example, see this Google Gadget page on our site.
Unfortunately, due to how some of the hosted blogging solutions (e.g. wordpress.com and blogger.com) strip javascript from the post content, it is not easy to put this Google Gadget inside a blog post. Users of WordPress (not WordPress.com), see this page for details, and I quote “…sites like wordpress.com have set the tag filter to strip out all use of javascripts in posts…”