I won a game to design games! The gameful online community was founded by Jane McGonigal of TEDtalk, Steven Colbert and other-such-places fame. The community is dedicated to making games that actually improve the world. They regularly host game design challenges of various sorts. Over the summer, they hosted four challenges. And I recently found out that I ranked in 3 of the four challenges, winning one by myself, being part of a winning team on another, and getting an honorable mention on a third. Happy me.
You can read the overview and other fun designs here: