Petz Countryside for the Nintendo 3DS is a pet simulation game where you adopt a virtual pet and help expand a village by completing quests for neighbors. Released in October 2014 by Ubisoft, it involves caring for your pet, teaching it tricks, and interacting with villagers, similar to a mix of Nintendogs and Animal Crossing. Key features include voice and facial recognition, StreetPass functionality to connect with other players, and seasonal events.