It's interesting. It seems like there are many spin-off series, but this is the original. Even kindergarteners can play it. The size is about 30cm x 30cm. There are also mini versions, but the ones currently sold seem to be slightly smaller, so this is a bit of a bargain. The rules are easier to understand if you watch them on YouTube. It's more fun to play with three or four people than with two. The box is flimsy, and the corners tore after playing it 3-4 times. Since then, I've been storing it in the state shown in the 8th image. All the pieces are present, and I washed and wiped them with disinfectant wipes before listing. The rules are simple, so even the elderly can understand them quickly. Playing with different people changes how children strategize. Please continue to use it if you like.