Gameschooling is a means to use tabletop gaming (board games and card games) in an intentional way, as part of your personal homeschool culture and educational philosophy. Rather than playing games occasionally just for fun, gameschooling families see them as essential to their homeschool daily or weekly for a variety of reasons (including fun!).
Some people use the games organically, where information and skills are obtained simply by choosing a game and playing. Others choose games to direct a topic they're studying.