Scooby-Doo boxes, iron-on transfers, coloring books, story books, records, underwear, and other such goods. When Scrappy-Doo was introduced to the series in 1979, he, Scooby, and Shaggy became the foci of much of the merchandising, including a 1983 Milton-Bradley "Scooby-Doo and Scrappy-Doo" board game. The first "Scooby-Doo" video game appeared in arcades in 1986, and has been followed by a number of games for both home consoles and personal computers. "Scooby-Doo "multivitamins also debuted at this time, and have been manufactured by Bayer since 2001. "Scooby-Doo" merchandising tapered off during the late 1980s and early 1990s, but increased after the series'
Scooby-Doo the predominantly skeptic oriented formula to that of most television dealing with paranormal themes, and considered that an adult analogue to "Scooby-Doo" would be a great public service. "Scooby-Doo" has maintained a significant fan base, which has grown steadily since the 1990s due to the show's popularity among both young children and nostalgic adults who grew up with the series. Several television critics have stated that the show's mix of the comedy-adventure and horror genres was the reason for its widespread success. As Fred Silverman and the Hanna-Barbera staff had planned when they first began producing the series, "Scooby-Doo"s ghosts,