The Wii Fit universe (Wii Fit, Wii Fit) refers to the Smash Bros. series' collection of characters, stages, and properties that hail from the Wii Fit series by Nintendo. Originating in 2007, the Wii Fit franchise has had a total of three installments, two for the Wii and one for the Wii U. The series was very popular when it first came out, and was very hard to find in stores. The games came packaged with a Wii Balance Board, a device that functions somewhat similarly to a scale.