Grepolis is advertised free MMO browser game that has recently brought over to the US servers.  The object of the game is to build cities and a military that can conquer and take cities away from other players.  You must work with other players forming alliances and eventually take control of the many islands that make up the game map. Each island contains space for twenty city slots and once your alliance controls an island, you can build a world wonder near the end game. To get to the end game will take roughly two years depending on the amount of players and the number of cities built.
This game is always active.  If you are not online and playing you can still lose your cities to other players. Another downside to this is there is no option to hide your armies.  You can however install an app to play the game on your phone while you are away from the pc and it has a option that will notify you if your are being attacked, but unless you are ok with being woken up at 4am, best to leave it off.
Grepolis is advertised as a free to play game. Which it is. However the game does offer in game gold which can be purchased to give you extra benefits such as, bonus to fighting strength of units, increased favor from the gods, increased amount of resources, and trade, programs that can help improve battle plans when working with your alliance, not to mention you can drastically cut down on the amount of time it takes to build your city, your military, and complete research. To remain competitive with other players, you will need to spend at least a minimum of $80 US every month. They do offer surveys or items you can purchase for free gold from outside companies, but most players have found little of none of them workking correctly and giving the players the bonus gold,
This game is  lacking on an a updated chat system. There is no global chat. A very antiquated chat system if offered for alliance, however most players have instead chosen to use outside chat systems such as skype. You can message someone in the game by sending a private message that resemble more like email than chat, with no option to save drafts. If you inadvertantly open another window while creating a message, you lose the entire message. What the game lacks in a chat system it makes up for by offering a forum for alliances that is very easy to use and allows you to control each subject and even sharing with other alliances.
The graphic in this game are minimul. You have only two views. One of your city, that is stagnent with only the buildings changing slightly in design as you upgrade them and a view of the ocean with islands. Do not expect to see military units, or ships sailing across the ocean. Once you launch an attack on another player, you will only get a report showing what units were lost and the amount of points and resources gained.
If you plan to play this game, be prepared to spend a lot of time at the pc just to keep from losing your cities, also you are going to need to spend a lot of money just to remain competitive with the other players.You can play for free, but do not expect to be able to keep from losing those cities to other players.  I don’t know about you, but for the $80 a month I was spending, I would expect a lot more from a game.