YO-KAI WATCH - 3DS YO-KAI WATCH centers on a boy who gets a special watch that lets him befriend and help mischievous Yo-kai* and later summon them to fight other Yo-kai. Players can overcome challenges and help various characters solve everyday problems with the help of Yo-kai friends. These eccentric Yo-kai resemble anything from inanimate objects to mythical creatures.