hunt_activity_standard_game_effect

hunt_activity_standard_game_effect = {
	if = {
		limit = { NOT = { exists = scope:liege } }
		if = {
			limit = { exists = scope:story }
			scope:story.story_owner = { save_temporary_scope_as = liege }
		}
		else = {
			root = { save_temporary_scope_as = liege }
		}
	}
	random_list = {
		10 = { # Boar
			trigger = {
				$PROVINCE$ = { hunt_animal_boar_trigger = yes }
				NOT = { exists = scope:small_local_game }
			}
			# Master of Hunt aptitude affects chance of managed game
			activity_court_position_aptitude_positive_modifier = { LIEGE = scope:liege POS = master_of_hunt }
			# Increase larger deer chance with management buildings
			hunt_activity_game_building_modifier = { PROVINCE = $PROVINCE$ }
			set_variable = { name = animal_type value = flag:boar years = 3 }
		}
		30 = { # Deer/Antelope
			trigger = {
				$PROVINCE$ = { hunt_animal_deer_antelope_trigger = yes }
			}
			# Master of Hunt aptitude affects chance of managed game
			activity_court_position_aptitude_positive_modifier = { LIEGE = scope:liege POS = master_of_hunt }
			# Increase larger deer chance with management buildings
			hunt_activity_game_building_modifier = { PROVINCE = $PROVINCE$ }
			hunt_activity_deer_game_effect = { PROVINCE = $PROVINCE$ }
		}
		1 = { # Aurochs
			trigger = {
				$PROVINCE$ = { hunt_animal_aurochs_trigger = yes }
				NOT = { $HUNTER$.religion = religion:hinduism_religion }
				NOT = { exists = scope:small_local_game }
			}
			set_variable = { name = animal_type value = flag:aurochs }
		}
		10 = { # Bison
			trigger = {
				$PROVINCE$ = { hunt_animal_bison_trigger = yes }
				NOT = { exists = scope:small_local_game }
			}
			set_variable = { name = animal_type value = flag:bison }
		}
		5 = { # Fox
			trigger = {
				$PROVINCE$ = { hunt_animal_fox_trigger = yes }
				NOT = { exists = scope:big_local_game }
			}
			set_variable = { name = animal_type value = flag:fox }
		}
		5 = { # Hare
			modifier = {
				exists = scope:big_local_game
				add = -5
			}
			set_variable = { name = animal_type value = flag:hare }
		}
	}
	# Fallback
	if = {
		limit = { NOT = { exists = var:animal_type } }
		set_variable = { name = animal_type value = flag:stag years = 3 }
	}
}

As written in game/common/scripted_effects/00_hunt_effects.txt.