I teach in a middle school and my 3rd graders had a blast. I made it a rule that every person had to go to the board atleast once. I also made a starting point for all groups. I moved around the room so that each time the same group wasn't getting all the points. This made it very interesting. They get very competitive. I also added a phrase round that was for listening only.

Thanks for the game idea!!! It was a ton of fun=)