A hit with middle school students! Old Math Guy is a card game that involves matching pairs and is played the same way as Old Maid. In this post, learn about the Old Math Guys, read 10 reasons why I love OMG and you should too, and access TWO free games. The diverse group of Old Math Guys are lovable and hilarious. Best of all, this game promotes cooperative learning, mental agility, and fun! Created by Free to Discover.