Civilization Cultures!
Civilizations will now create and develop their own cultures based on their early background or colonial origins.
Cultures develop additional traits over time, providing unique modifiers to civilizations. A culture can spread beyond the borders of a single civilization, and sometimes even outlive the civilization that gave birth to it.
Cultures
Added a new Culture system. Civilizations can now consist of multiple distinct cultures instead of behaving as culturally uniform populations.
Every civilization begins with a founding culture connected to its origin world and founding civilization.
Cultures can spread between worlds through migration and colonization, preserving the cultural composition of moving populations.
The same culture can now exist across multiple planets and even multiple civilizations.
Each planet tracks its own cultural composition and dominant culture.
Each civilization also determines its dominant culture from the combined population of its cultures across all controlled worlds.
Culture bonuses now scale proportionally with the population share of cultures carrying a given trait instead of being granted only by the dominant culture.
Cultures remain persistent even if their original civilization disappears.
Culture Traits
Added cultural traits that provide gameplay modifiers to civilizations and planets.
Cultures can evolve and acquire additional traits over time.
A culture can currently develop up to three traits.
Cultural development is based on a combination of culture age and total population.
Age and population contribute independently to development, allowing both very old smaller cultures and rapidly growing cultures to continue evolving.
Culture population used for development is combined across every world and civilization where that culture exists.
A culture that has spread into several civilizations still develops as one shared culture and receives the same newly evolved trait everywhere it exists.
Development progress bars show the current percentage toward the next cultural trait.
Other and bugfixes
Added Ecological Stewardship technology and Nature Park building, preserving natural terrain while improving planetary Happiness with additional bonuses from adjacent parks.
Improved civilization crisis presentation with individual risk progress bars.
Surface inspiration targeting no longer changes the currently selected tile.