This Sunday is Nintendo Family Fun Demo Day at 100 Best Buy stores across the nation. Announced today on the electronic retailers website, the special event will allow families to demo different games on the Nintendo Switch & Nintendo 3DS. The Nintendo Family Fun Demo Day will start at 3 p.m. local time. Demos will include Super Mario Odyssey on the Nintendo Switch and Pokemon Ultra Sun and Pokemon Ultra Moon for the 3DS. Participants can also win Nintendo prizes as they demo. Best Buy also announced that customers that buy one 3DS game can get 50% off another (select titles). Best Buy’s Nintendo Family Fun Demo Day starts on December 10th, 2017. See a list stores participating in the event here.