I tested it before giving it away and it worked great. I had an unused small drawstring bag for brewing loose tea which I placed on top of the main bag after installing the batteries. Other reviews state that a circuit accidentally formed in storage can drain your batteries. So you should actually include a bag/box to isolate the power supply. Replacing the batteries is a bit of a hassle (you'll need a screwdriver) so it's not worth risking the batteries dying. The game itself seems quite addictive. In high school physics class, I didn't understand electricity well, so I wanted to give this game to my young relatives to help them understand the concepts of electricity early. But even an idiot like me can easily understand this game. I really don't think you need to read the instructions, just dive in as it's obvious what to do. You can read the guide for ideas if you are having trouble winning a round. My point is that while electricity is confusing and confusing (for some of us!), this game is not. Aside from the twists and turns that electricity adds, it's like games like Sudoku or Tetris. You arrange a series of items according to simple rules. I love these types of games so I really liked this one too. I also like that it's quiet. Some kids might like the sound effects turned off when the lights are on, but parents and even some kids are very tired of loud toys. Fun, educational, peaceful. It really is the perfect gift. We've given it to children aged 9 and 11 but it seems like it would be great for a smart younger child (maybe 7 year old?) or a playful adult.
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