Anyone who has played Civilization 3 or 4, will be disappointed by Civ5. Much less depth and strategic options than the previous strategy fans can only scare. In this context, a tip: Build not the United Nations, if you are planning to conquer yet or to gain the Space victory! If you force the UN General Assembly can only choose the winner and end the game by. Other options no longer exist then. And after the victory there after hours of play only a drought statistics, no replay, no movies ... Firaxis has brought no successor but a precursor game on the market, about the same level of the very first Civilization. It is obviously a question of opening up the game new, younger and more inexperienced CIV buyers, not to keep the loyal following in line. Well ... bye Firaxis.
Clear recommendation: Saves you money and stay with CIV4.