The series is about a child - a male playable character named Nate or a female playable character named Katie - in Springdale. One day while looking for bugs in the woods they come across a capsule machine. When they open up one of the capsules they find a yo-kai named "Whisper" who, in his gratitude, decides to become their butler. He gives them a special watch called the "Yo-kai Watch" which allows them to view yo-kai. By befriending local yo-kai the protagonist gains medals, which can be used to summon other yo-kai to battle yo-kai that are causing trouble around town.
Works in this franchise include:
- Yo-kai Watch (July 2013 Japan, November 2015 US)
- Yo-kai Watch 2: Bony Spirits (Ganso) and Fleshy Souls (Honke) (July 2014 Japan, September 2016 US)
- Yo-kai Watch 2: Psychic Specters (Shinuchi) (December 2014)
- Yo-kai Watch Busters: Red Cat Troupe and White Dog Team (July 2015 Japan)
- Yo-kai Watch Busters: Moon Rabbit Team (December 2015 Japan)
- Yo-kai Watch Busters: Iron Oni Army (December 2015 Japan) note
- Yo-kai Watch: Wibble Wobble (Puni Puni) (October 2015 Japan, March 2016 US)
- Just Dance: Yo-kai Watch Edition (December 2015 Japan), a crossover with the Ubisoft series
- Yo-kai Three Kingdoms (April 2016 Japan), a crossover with Koei's Romance of the Three Kingdoms series
- Yo-kai Watch 3: Sushi and Tempura (July 2016 Japan)
- Yo-kai Watch 3: Sukiyaki (December 2016 Japan)
- Yo-kai Watch 4 (TBA 2018)
- Yo-kai Watch: An anime adaptation of the games starring Nate. The anime opts for a Slice of Life approach and usually follows a Three Shorts format.
- Yo-kai Watch: Shadowside: A Spin-Offspring series based off the fourth film. It takes place 30 years later and stars Nate's children.
- Yo-kai Watch the Movie (The Secret of its Creation~meow!) (December 2014 Japan, October 2016 US)
- Yo-kai Watch the Movie: The Great King Enma and the Five Tales~Meow! (December 2015 Japan)
- Yo-kai Watch the Movie: The Great Adventure of the Flying Whale & the Double World~meow! (December 2016 Japan)
- Yo-kai Watch: Shadowside - The Return of the Oni King (December 2017)
- Yo-kai Watch: A manga adaptation of the games that runs in Coro Coro magazine. Nate is the protagonist but it is a separate adaptation from the anime.
- Yo-kai Watch: Wakuwaku Nyanderful Days: A Shoujo manga starring Katie as the protagonist.
- Yo-Kai Watch