


When taking over a planet from another race, normal improvements are lost if the new owner does not possess the appropriate technologies.Some of the Improvements, Super Projects, and Galactic Achievements are restricted to civilizations with a certain alignment or a technology only available to one specific race.Super Projects, Galactic Achievements, Trade Goods, Initial Colony and Civilization Capital can't. Improvements can be upgraded, changed to another type of improvement, or deconstructed.Trade Goods - Commodities that can only be created by one civilization, but which may be traded.Galactic Achievements - Monumental tasks that can only be built once in the entire galaxy.It is possible to have more than one Super Project by acquiring planets from another civilisation that has built it or is in the process of building it.Super Projects - Significant projects that can only be built once for each civilization.Unique Project, that can be build only once per planet.Improvements - Standard projects that can be built multiple times on each colony.There are five types of projects that can be built in a tile: Some tiles may contain special resources that provide bonuses to projects built on them.

The number of usable tiles is determined by the planet quality. Planetary improvements are projects (usually buildings) that can be built or bought on unused tiles on the surface of planets. Each planet starts with either an Initial Colony or Civilization Capital.
