CK3 DatabaseCrusader Kings III · 1.20.0.3 “Crozier” · unofficial

Casus belli · Invasions

Adventurer Invasion

Adventurer Invasion is a casus belli in Crusader Kings III (invasions). If the attacker wins: The attacker gains the contested Title. If the defender wins: The defender keeps the contested Title. Declaring it costs piety and prestige. The war goal is worth 80% war score. Patch 1.20.0.3, from game/common/casus_belli_types/07_ep3_wars.txt.

Quick answers (3)
What do you get for winning a Adventurer Invasion war in CK3?
The attacker gains the contested Title (patch 1.20.0.3).
What happens on a white peace?
The defender keeps the contested Title.
What does the Adventurer Invasion casus belli cost?
piety and prestige; the amount depends on the titles, claims and distance, worked out when you declare.

How the war ends

Attacker wins

The attacker gains the contested Title.

White peace

The defender keeps the contested Title.

Defender wins

The defender keeps the contested Title.

If the war becomes invalid

The … has ended: the defender no longer … any land in the target region.

Who can declare it

The game shows no text of its own for these conditions; the script is below.

Every invasions war (the group's allowed_for_character) (7 lines of game script)
herders_and_tributary_constraints = yes
pam_personal_pacifism_offensive_war_ban_trigger = yes
tgp_dynastic_cycle_offensive_wars_ban_trigger = yes
tgp_war_ban_all_ministers_trigger = yes
NOT = {
	government_has_flag = government_is_theocracy
}

As written in game/common/casus_belli_groups/00_casus_belli_groups.txt.

Attacker (allowed_for_character) (2 lines of game script)
ep3_adventurer_invasion_allowed_for_character_trigger = yes
scope:defender.highest_held_title_tier >= tier_county

As written in game/common/casus_belli_types/07_ep3_wars.txt.

Defender (allowed_against_character) (1 line of game script)
ep3_adventurer_landless_allowed_against_character_trigger = yes

As written in game/common/casus_belli_types/07_ep3_wars.txt.

When it can start (valid_to_start) (13 lines of game script)
scope:target = {
	is_landless_type_title = no
	trigger_if = {
		limit = {
			holder.faith ?= root.faith
		}
		NOT = {
			holder ?= {
				is_theocratic_lessee = yes
			}
		}
	}
}

As written in game/common/casus_belli_types/07_ep3_wars.txt.

Cost to declare

Costs piety and prestige. The amount is worked out when you declare (by the titles targeted, claims, distance and more), so the script is shown as written:

Cost (11 lines of game script)
piety = {
	add = ep3_laamp_invasion_base_piety_cost
	multiply = common_cb_piety_cost_multiplier
	multiply = common_claim_reduction_cost_multiplier_core
	multiply = 0.5
}
prestige = {
	value = ep3_laamp_invasion_cb_cost
	multiply = common_cb_prestige_cost_multiplier
	multiply = common_claim_reduction_cost_multiplier_core
}

As written in game/common/casus_belli_types/07_ep3_wars.txt.

Source: game/common/casus_belli_types/07_ep3_wars.txt and the English localisation, Crusader Kings III 1.20.0.3. “The attacker”, “the defender” stand where the game names the character; “…” marks other words it fills in during play.