Dragon Ball Online (officially abbreviated as DBO) is a massively multiplayer online role-playing game being developed simultaneously in Japan and South Korea by NTL, set in the Dragon Ball universe, first introduced by the Dragon Ball Japanese manga in 1984. Dragon Ball Online takes place on Earth, 216 years after the events at the conclusion of the Dragon Ball manga series. A beta testing of Dragon Ball Online was initially announced to begin in South Korea during the summer of 2007 with a Japanese beta to soon follow, but has been delayed and is currently slated for the second half of 2009. A North American release has not yet been announced, though in a press conference held in South Korea on February 14, 2008, NTL expressed interest in releasing the game to a worldwide audience. In March 2009, it was announced that TBWAKorea obtained the marketing rights for Dragon Ball Online and would run a full-scale marketing campaign from April to August 2009.[4] Series creator Akira Toriyama has a great deal of creative control over the project, both contributing to and supervising the story and art design, including character and location arrangements. It has been stated that Toriyama has been working on character designs for this project for the last five years.

As with other MMORPGs, players control a character avatar within a persistent game world, where they will be able to explore the landscape, search for the Dragon Balls, train to compete in the Tenkaichi Budokai, aspiring to become like the warriors of legend, as well as interacting with NPCs as well as other players. As in most MMORPGs, players will be able to obtain money and experience which will allow them to level up and obtain new abilities. It is speculated that players may also be able to participate in "Timemachine Missions", in which they will receive guidance from Time Patrol Trunks, in order to travel back in time and take part in notable aspects of the Dragon Ball history.