Blue Dragon (BLUE DRAGON-ブルードラゴン-^?) is a role-playing video game developed by Mistwalker and Artoon and published by Microsoft Game Studios exclusively for the Xbox 360. Blue Dragon is based on a design by Final Fantasy series creator Hironobu Sakaguchi, who also supervised development and wrote the plot. The game was released in Japan on December 7, 2006, where it was sold both as a standalone title and as part of a bundle with the Xbox 360 (including the game, the Xbox 360 system itself, and a Blue Dragon console skin). Other regions received only the game itself, with a release in Europe on August 24, 2007, and in North America on August 28, 2007.

Blue Dragon follows the story of five friends (Shu, Jiro, Kluke, Zola, and Marumaro) as they travel across the world to confront Nene, the evil ruler of the Grand Kingdom. The setting inspired separate anime and manga adaptations, although these follow the story to different degrees and feature a different cast of characters. The game follows a traditional role-playing design, based around exploration and turn-based combat.

Blue Dragon is the first Xbox 360 title to make use of multiple discs, spanning three discs in total. Overall, the game has received a positive reception, with an average score of 77.48% on the review aggregator website Game Rankings. Blue Dragon was both applauded and criticized for its adaptation of the traditional elements of role-playing games.

Blue Dragon begins when the legendary purple clouds arrive in Talta Village, the home of Shu, Kluke, and Jiro. While the other villagers seek shelter, Shu and Jiro slow down the Land Shark. After encountering troubles, Kluke saves them. Together, the three trap the Land Shark in a net, but the Land Shark breaks free and rushes away, with Shu, Jiro, and Kluke dangling from its back.^[14][17] The Land Shark stops in an ancient ruin that the three friends explore. They discover the Land Shark is really a machine—a "mechat". Without warning, the mechat comes to life, only this time sailing into the sky, again carrying the three with it.

The party arrives at a giant mechat base in the clouds and are tossed into the throne room of Nene, the apparent leader. Nene explains to them how he enjoys hearing the screams of the dying victims of the Land Shark. The party battles Nene, but are easily defeated.^[18] They are thrown out of the base and start to fall to their deaths, but a beam of light from the base catches them, and brings them back to the base. The party find three small floating spheres in the middle of the room; a mysterious voice commands them to swallow the spheres. The party refuses, and instead hold onto the spheres for safekeeping. As they try to reach another mechat to escape the base, they are forced to fight a large army of Nene's robots. When the battle seems it will never end, and with the unseen voice promising them knowledge of how to pilot the mechat, the party members eat the spheres. As they consume the spheres, a strange transformation occurs to each, changing the forms of their shadows into powerful beings that are able to destroy the robot army. The party escapes the base and crash in a desert.^[19]

After becoming familiar with their new shadows, the party travels to Talta village, befriending Marumaro on the way, who also possesses a magical shadow. Finding that the villagers from Talta have started to head towards the capital city of Jibral, the party takes off after them. Just outside Jibral, the party finds the villagers attacked by monsters but they are saved by the arrival of King Jibral and his forces, including Zola. Once the villagers are brought to Jibral, the King decides to implement a plan to destroy one of Nene's bases near Jibral using Shu and his friends along with Zola. Together, the party works with the warriors of Talta Village the Jibral Kingdom to besiege Nene's mechat base. After the base is destroyed, the party heads north in search of Nene. Nene captures Kluke, and places a collar around her neck which Nene alleges will explode. After reaching Nene, Zola separates from the party to buy them time to attack Nene. When the party attempts to remove Kluke's collar, Nene absorbs the party's shadows by placing collars on all of them. After taking their powers and placing them in himself, he removes their collars and attempts to kill them before they recover. Shu, despite being drained of magical ability, unconsciously teleports the party to the distant Devour village.^[16]

In Devour Village, they find themselves unable to escape the village without their magic, because the community is surrounded by evil trees. Shu has an epiphany and finds himself able to summon his dragon shadow without his sphere. Shu destroys the head evil tree in Devour Village, and the party is finally able to leave. Eventually all the party are able to summon their shadows again.

At that point, the party reunites with Zola, who supplies a mechat for them to pursue Nene.^[16] As the party goes after Nene in the mechat, Nene initiates an ancient machine that splits the world into two hemispheres, with thousands of isolated cubes floating between the halves. The party follows Nene to the primitive cube at the core of the transformation. The party journeys through the cube eventually defeating General Szabo and ultimately engaging Nene. As the party weakens Nene, it is revealed that Zola was working for Nene all along, and she was the voice that told the others to swallow the spheres. When Zola was too weak to defend herself, Nene had given her a shadow and sent her to Jibral as a spy. Zola betrays and kills Nene choosing her friends over him. Deathroy, the small creature that has been on Nene's shoulder removes himself from his masters body and absorbs Nene's remaining life force. Deathroy is revealed to be Destroy, the biomechanical weapon that destroyed the legendary ancients that once tried to bring peace to the world. The party defeats Destroy, melting him in lava. The party then quickly escapes from the melting cube to rejoin their families.^[20]