Yetisports
There's now a history of the penguin-baseball game explaining who wrote it and providing other info about it, including links to many versions of it. (Apparently the original idea was that the yeti was sad that penguins couldn't fly, and so was giving them flying lessons.) You can also download the game (and even play part 1 on a Flash-enabled cell phone!) from the official Yetisports home page.