Player uses a cardboard "bombsite" to drop marble bombs on "flip" targets in the box for up to 1000 points. Perfect score is 3150 points. Unit is self contained. Lid of box is lifted off containing the flip target display. Player stands over the box dropping the black marble "bombs" using the provided "bombsite" marble tube. Method and "bombsite" actually work very well!! "Bombsite is made like a pair of binoculars with a tube attached. When adjusted they actually display an X to site over the "target" and drop the marble from the attached tube. All made of heavy cardboard!!