"Romance of the Three Kingdoms Ⅸ with Power Up Kit" is an expanded version of "Romance of the Three Kingdoms Ⅸ," which was released in 2003 as the 9th game in the series. RTK Ⅸ is a strategy based simulation game based in China's chaotic Three Kingdoms period. Players portray a Daimyo and lead their clan in an attempt to unify the entire land of Japan. For the first time in the series, the game uses a single large map and brings together battle and strategy in an entirely new way. Players give their officers "Strategies" and those officers work to carry them out in real-time. Players can also set up facilities and obstacles on the battlefield to aid them. Officers can learn tactics and employ them in a strategic battle like none before.