Due to fan demand, in 2014, it returned with Season 3.

Originally LEGO had planned that the series would end after two seasons. The second season aired in July of that same year, with the two-season run intended to be the full run of the show. The first season released starting in December of that year and lasted a few months into 2012. In early 2011, the pilot episodes were released. Though it was initially meant to only introduce the toyline, potential was seen in the pilot, and at some point in the pilot's production, a proper series was commissioned. On May 2, 2010, the first proof-of-concept animation by WILFilm was completed, in which Kai fought a Skulkin. On January 10, 2010, the Hageman Brothers began writing the pilot episode, and on February 22, they finished the first draft. Later, Tommy Andreasen and Thomas Fenger thought up and created the martial art of Spinjitzu. Taking some ideas from the old theme, they revamped it into a new one called Ninjago, though it was originally still called LEGO Ninja. The company decided to do a retake on a theme that had existed for a few years: Ninja, which was a Castle subtheme that was discontinued in 2000. In 2009, LEGO wanted to continue the idea of a story-driven original theme, which they had previously done with LEGO Atlantis.

9.4 Lego Ninjago: Masters of Spinjitzu: Rise of the Green Ninja.

9.3 LEGO Ninjago: Masters of Spinjitzu Season One.

4.18 Season 13: Master of the Mountain (2020).

4.16 Prime Empire Original Shorts (2020).

4.15 Season 11: Secrets of the Forbidden Spinjitzu (2019).

4.13 Tales from the Monastery of Spinjitzu (2018).

4.10 Season 7: The Hands of Time (2017).

4.6 Season 4: Tournament of Elements (2015).

4.4 Season 2: Legacy of the Green Ninja (2012).

1.4 Animation studio change (2019-present).

Lego ninjago episode 1