Hungry Hungry Hippos seems to be every child's favorite game. The object of the game is to release the marbles and try to get your hippo to eat them all up. As a parent I would say, "DON'T buy the game." It's loud, obnoxious, and chaotic. The only positive is that the kids can play this together and don't need adult supervision, except for all the CHOKING HAZARDS. I would put this in a category with Operation. Another game I despise.
FYI: I didn't buy the game, someone gave it to us.