This is a kids game similar to Hungry Hungry Hippos. The game comes with a hubcap size tray that is round on the bottom so that it tilts and spins. The tray has 4 colored cups spaced evenly around the rim, and 20 marbles (5 each of four different colors matching the cups) are placed in the tray. Each player takes a dolphin grabber that has the same color handle as the cup in front of him. The grabber has a dolphin head on its end that closes its mouth when you pull the trigger on the handle.At the count of three, all players use their dolphins to grab marbles from the tray that match their cups color. The first player to put all five of his marbles in his cup wins. - BoardGameGeek