Adults and children love it!

Children learn quickly to respond but worrying about because the same color does not always mean that you have to ring the bell. If a laughing smiley black and a sad smiley one may namely not ring, only 2 same smiling faces!

That's even the reflex of an adult sometimes too much, so that I ring often wrong and the children are happy. There is a small game that can be good to take time to grandma etc.
And above all there are also great for little ones and gamble with correctly.

My 5 year old son has become much exercise we seriously play against each other and I do not let him win or ring with the wait until it rang. He loves this game and there is no longer an integral part of the children's room!