There is nothing more I can say other then it didn't work. When I bought it was told as long as I followed the directions closely I'd be fine. I read every single thing in the box many times over and did countless tests and it just never fired. There was not even a hint anything was going to happen every time I pushed the launch button.I had a group of kids with me ranging from Kindergarten to Jr. High and most of them were really disappointed, especially the 6 year old who's job it was to push the button... again and again and again and again.Don't buy this, and if you absolutely must, try it out yourself to make sure you can do it before sharing it with any kids.