Although most people use the term spin-off and sequel interchangeably, there are some marked differences between the two. While a spin-off will focus on one character, with a sequel, the majority of the cast returns in a different setting or time. While some spin-offs manage to do very well, with sequels, it isn’t so easy. Much of the time they fail to capture the magic of their predecessor and end up fading into oblivion as a result. Here are 6 sequels you didn’t know existed:
6. Gilligan’s Planet
Gilligan’s Planet was an animated series that aired for one season from 1982 to 1983 on CBS. It was the second sequel to Gilligan’s Island, the first being on The New Adventures of Gilligan. The original actors voiced their characters, but Tina Louise did not reprise her role as Ginger. The premise for the sequel was a little weird. The professor built a spaceship so the characters could escape to another planet, but they just end up stranding on an island on the new planet.
Source: DVD Talk