"NOBUNAGA’S AMBITION: Haouden with Power Up Kit" is an expanded version of "NOBUNAGA'S AMBITION: Haouden," which was released in 1992 as the 5th game in the series.
Up to now in the series, warfare was focused on whole countries. Haouden changes that focus towards individual castles. Also, a Daimyo controls their officers through giving out rewards based on their achievements as they fight for total control of the Warring States.