Base game achievement

Sibling Rivalry

Starting as any of the Jimena siblings in 1066, become Emperor of Spain

Conditions as the game checks them

Possible decides whether the achievement can still be earned in a run; happened is the check that unlocks it (common/achievements/_achievements.info).

Unlocks when (happened) (6 lines of game script)

custom_description = {
	text = sibling_rivalry_achievement_trigger
	any_held_title = {
		this = title:e_spain
	}
}

As written in game/common/achievements/standard_achievements.txt.

Still possible while (possible) (1 line of game script)

exists = global_var:started_sibling_rivalry_achievement

As written in game/common/achievements/standard_achievements.txt.

Source: game/common/achievements/standard_achievements.txt, game/common/achievement_groups.txt and the English localisation, Crusader Kings III 1.20.0.3. Unlock share: Steam Web API, 2026-10-02.