Google posted their April Fools' Day prank, which is an http://youtu.be/rznYifPHxDg. It's pretty clear that they're paying homage to the Dragon Quest series (seems like the first game, judging by the music), made even more obvious by the Square Enix copyright. Very cool, and it'd be even cooler if it had actual battles.

I figured this could also serve as a place to dump all of the April Fools' Day pranks folks come across, as I'm sure there'll be plenty of 'em very soon.