Well… not quite so fun, because the “hotspots” you have to click on are sometimes really tiny… but check out this game (or download the SWF file here – its a bit easier to hit the hotspots when the SWF plays in a bigger frame), original blog entry I saw is here, follow up post here, and solution (in rot13) is here.
[UPDATE: A rot13 decoder (which you would find if you looked at the comments on the solution post), can be found here.]