Castle / Ninja

Ninja is a subtheme of Castle that consists of 29 sets that ran from 1998 to 2000. Most sets were released in 1999 which accounted for 15 sets. As of today, the average annual growth of all the sets in Castle Ninja is around 7.1% per year. The current value of all sets in new/factory sealed condtion is $2,950.65. As of today, 6093 Flying Ninja Fortress is the most valuable set in Castle Ninja with an estimated new/factory sealed value of $369.95.

With the introduction of the Castle Ninja subtheme which left it's traditional European setting and visited medieval Japan in the 16th century and featured Samurai and Ninjas.

The Castle theme is one of LEGO’s primary themes first introduced in 1978 and based around medieval life with castles and knights. It is currently the third longest-lived theme in LEGO history. Over the years it saw numerous changes thus introducing various fantasy elements.