This was a gift for my son, but everyone walking by the table joined in and couldn't stop playing!
Great game. It's similar to 24 or around the world flash cards, which were my favorites when I was in school. I've played with all types of people at this point, and even people who don't like math are surprised by how fun the game is (and how good they are at it). As a former teacher, I think this would be awesome in the classroom, or for parents trying to help their kids work on their multiplication or other math skills.