Science and Culture spread with civilization that are close enough,
When a neighbor Civilization has a tech that you don't have it will give science but only for this tech (same for culture)
The amount of science/culute depends on :
Number of cities that are close to his civilization,
The access lvl (visibility).
the mod works for AI and between them too.
whenever your units fight you gain science exept if you lose the unit, the technologie that advance is the upgade of the unit currently fighting.
so if your warrior get attacked or attack you gain science for the swordman tech (if you can't research the swordman tech then previous tech is researched), the goal is to give bonus to civilzation that make many war.
tech and civic are more expensive to balance so the game have the same duration, but it you want it to last even longer (or keep the base cost) you can modify the ScienceSpreadData.sql for now tech cost is x2 and civic x1.5 .
The goal of the mod was to create an Europe, but there's not enough civilization to make it when I play... may be if you have a better pc... have fun
Science Spread 1.0.3
Science and Culture Spread with neighbor