QUESTION

Hey, I have a question that i have looked every where for and I still don't have the answer for. Even though it isn't about a game, this movie title is driving me crazy. I remember only few aspects of the movie. I think the ending scene there is a party going on or something and what the kids think are there parents cut into a cake and green slime kind of oozes out of the cake and one of the kid screams and the movie ends. I also know that at some point these kids parents disappeared or were kidnapped and were trapped in a pod and the kids were in some kind of weird town, and that's all I know. If you think you know what the movie is please comment, thank you.