Winnovation FIRST Team 1625 hosts a "minibot" game every year. The goal is for returning team members to work with new and younger team members on the six-week project cycle - all phases start to finish. We invite teams from our area to join for a competition which coincides with a pancake breakfast and basket raffle (fundraising). We hold the event the first weekend in December, pending availability of the school cafetorium.
You can see last year's details here:
http://team1625.blogspot.com/2012/11...challenge.html
As an extra challenge this year our "League of Mothers" built and entered a robot too. (The kids thought we were kidding until we set that pink feathered robot on the field and it won a match or two!)
Great way to introduce the older kids to the challenges of game design too, as a couple of our seniors typically handle that element of the event.