It wont be a new review like giving on a rare app, everyone know about this one game and their share in the market.
Concept is all about stratergy, you cant do it at the first step itself.
If you have experience in age of emipres, a windows game, then you can get this app type. Its nearly a followup of that game but with exciting features in them.
Layout is on landscape mode with completely online backing of the data. It has very minute high design graphics in the game which gives better experience.
It goes by attacking other bases online and taking revenge, forming group and contesting group wars, etc, .
It gives people great fun among friends but keep one point in mind once you step into it as time moves you get deeper and deeper. Then getting out of it will seem to be impossible.
You can enjoy it if you have enough time to experience a great game.