In Empires of Sand, the center of the empire is the pharaoh’s city. There is where the king of Egypt lives and the city that players can evolve.
In order to evolve the city, the pharaoh needs stone that can be obtained from the stone mines near the city. Furthermore, the empire needs gold. The precious metal is used to train new and better troops. The temple and the laboratory also need money to unlock new spells and improvements in buildings.
The city has one building for each defense tower. Players can improve them using stone. It is important to upgrade them as soon as possible because the upgrades unlock new levels of the tower in battles. For example, if the archers towers in the city is level 4 that means players can upgrade that tower in battles up to level 4.
Units work the same way. The barracks building can be upgraded using stone, but inside the barracks troops needs money in order to strength them. Having a unit in level 3, means it can be upgraded during battle up to level 3.
Spells can be improved in the temple. Unlike troops or towers, when a spell is upgraded to a new level, there is no need to upgrade it during battle. This is very important because in order to upgrade a tower up to the max level, a player needs to spend a considerable amount of divine power. However, a spell is always at its maximum level since the very moment a battle starts.
Every upgrade made in the city is available in player versus player modes, and in the campaign.
There is also another important building in the city: The Fountain of Lives. Each time a player loses a ranked match, he or she loses one life. The fountain generates new lives.
And last, the most important building: The City Center. It is the home of the pharaoh and the level of this building defines if the others can be upgraded. For example, the laboratory can be built only when city center is level 2.