Children aged 4, 6 and 9 enjoyed 20 minutes to an hour. You like the game Hit the Mole Dinosaur. Dinosaurs are funny. In the beginning we couldn't get the volcano to work. We filled it with the maximum allowable amount of filtered water according to the instructions. In no case would "smoked". So we did exactly what the instructions said, DO NOT do it. We filled it with more water. And it still didn't work. Actually I think we overflowed it so I turned it upside down and poured out most of the water. When I did that, we shorted out some electrical functions because we overpowered them. This was repeated and did not end the game. We put it in front of a fan and let it dry and it worked fine and the "smoke" function worked. Find out. We refilled the water and it stopped working. Lol So less is better water for a volcano. I think the age of 9-10 is a bit overkill to keep their attention. My kids favorite part was playing with them. It seems well done, but English is not the creators' native language.
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