Advance

Ostrog

ostrog_advancein_game/common/advances/culture_russian.txt:85

The Ostrog is a small, wooden fortification which is constructed in remote territories of Russia. Due to their reliance on lumber, Ostrogs are relatively inexpensive and swift to construct.

RequiresEast SlavicCulture Grouppotential

Advance tree

The game files don’t say where this goes: it has no requires, so the game places it in the Absolutism tree itself.

Definitionin_game/common/advances/culture_russian.txt:85

86age = age_5_absolutism

87potential = {

88culture = {

88has_culture_group = culture_group:russian_group

}

90unlock_building = ostrog