Hungry Hungry Hippos for iPad    (April Fool's Day - 2012)

Online retailer ThinkGeek.com debuted Electronic Hungry Hungry Hippos for iPad. It was just like the classic 1970s version of the game, "except this time, the hippos fit over your iPad and the game board is an app!"

And ThinkGeek assured Hungry Hippo purists that the iPad version was "Fully endorsed by the International Hungry Hungry Hippo Association (IHHHA)."