Released directly-to-video on September 22, 1998, Scooby-Doo on Zombie Island was a landmark production. For nearly 30 years, the formula of the original Scooby-Doo, Where Are You! (1969-1970) and its subsequent iterations had been ironclad: the monsters were always fakes—greedy land developers, smugglers, or disgruntled carnival owners wearing masks. The gang would unmask the villain, utter "And I would have gotten away with it, too, if it weren't for you meddling kids," and the mystery would be solved.
Here’s a useful review of Scooby-Doo on Zombie Island (1998) that balances nostalgia, technical merit, and practical viewing advice. Scooby-Doo on Zombie Island
: The film reunites the Mystery Inc. gang after they had separated to pursue adult careers (e.g., Daphne as a TV reporter, Velma running a bookstore). Their motivation for traveling to Louisiana's Moonscar Island is to find a real ghost to save Daphne's struggling show. The gang would unmask the villain, utter "And