Scooby Doo ECG Booster Opening - Scooby Doo and the Aliens, Too! Expansion

About Scooby-Doo! Expandable Card Game, from BoardGameGeek:

From the back of the Starter Box: "Zoinks!" Have you ever wanted to help Scooby Doo and the group solve mysteries? Well, now you can with the Scooby-Doo Card Game! Join Scooby-Doo, Shaggy and the rest of the group as they try to unravel mysteries in the haunted castle or on a spooky island. In the Scooby-Doo Card Game you play members of Mystery, Inc. trying to solve a mystery. But Watch out! Your opponent is trying to stop you. As you explore different locations for clues you might find Captain Cutler or the Creeper in your path. Will Scooby-Doo run away? Probably, but hopefully you brought your box of Scooby Snacks! The cards have stills from the classic TV series. There was one expansion based on the "Scooby-Doo and the Alien Invaders" cartoon that was released in 2000.