We have been about 10 times played with 6-11jährigen boys and girls and it was always a total hit! Another reviewer also tells a lot over the game, so I'll go not to the content of one, but on the environment conditions for the game:
We have outside and inside, played with us and at various friends, based mostly with Android Samsung Galaxy, at other times with iPhones. It was found that one
a) better follow the Notice of Ravensburger app to turn on Airplane Mode on your smartphone, so the charged cell phone keeps namely during the entire season and
b) really needs a well-lit place to play. Outside in full sun it goes, in the afternoon in the penumbra of daylight already enough, however not from the character recognition. At the dining table under 4 (halogen) lamps works detection to 100%, with friends in the living room with rather dim light (which was me personally generally too dark) closed the recognition, however poorly.
That's why: Anyone who turns the airplane mode during the game and makes for a good lighting directly over the game board, the experienced with children of various ages a lot of fun! :)