Have you have wondered which of two countries is bigger? Wat building is taller? Or which company makes more money? Our children, the oldest about 10 years old, love these kind of mind game questions. So, not knowing all the answer ourself we made a game of this idea. Thank you Nadine!Now you can test your knowledge on countries and buildings. Play a solo game, duel with a friend on one device or challenge a friend online. If you feel confident you can win a match best of 3? Why don't you bet a few crystal..The free version has advertisements in the main screen and occasionally after a play. To remove the ads it is possible to upgrade to pro. This upgrade also enables playing multiplayer games with 3 and 4 people.Why only two categories you might wonder. Well we hope this is only a start for mor fun categories. If you like it and have suggestions for other question categories, do let us know in a good review!ENjoy!!