A city block in Cyber City world represents the player's home base.
Initially, without any buildings, it yields only the CYBR token. As soon as you erect a building on it, the city block starts generating the corresponding resource. In total four building types are available, you can choose only one for your city block.
Every city block has its own coordinates on the city map. Depending on city blocks in possession of surrounding players your city block may have a positional advantage or a disadvantage.