Duel Masters!! (also known as Duel Masters 2) is the 15th season of the Duel Masters Anime.
It is also known as the Gacharange Arc of Joe's story
The events of the season was based on the Gacharange Series, introducing the new Gacharange creatures.
It features the Water Civilization lands and Duel Master Cap as the story focus. After saving the Nature Civilization lands from destruction and restoration underway by the newly appointed queen Momo, Joe changes his focus on mastering the Gacharange mechanic. At the same time, he have to tackle the task of saving the Water Civilization lands from the Darkness Civilization