Dead or Alive: Dimensions[1], abbreviated as DOAD, is a 2011 fighting game developed by Team Ninja and published by Tecmo Koei for the Nintendo 3DS.

Its plot compiles the stories of the previous four main DOA games with additional details, focusing on Kasumi for 1, Ryu Hayabusa for 2, Ayane for 3, and Helena Douglas for 4.

Dimensions also uses the 3DS' StreetPass feature to make AI representations of the player, based on their play patterns, that can challenge other owners of the game in the Throwdown mode.

In the prologue, set before the first game, Kasumi is confronted by her father, the 17th and current leader of the Mugen Tenshin Ninja Clan, Shiden, about her skills as he plans to make her his next heir.

Upon learning this, Kasumi decided to run away from the village to take revenge on Raidou for Hayate, even though it meant she would be a fugitive and likely to be killed by her own clan since leaving without permission is against the ninja code.

Heading towards Helena Douglas' cruise ship "Freedom Survivor", Kasumi is introduced to both Christie and Bayman and is told about the "DOA tournament", with Raidou being there.

Kasumi encounters Ayane, now a contestant, and both meet Raidou with Fame Douglas, the founder and head of the Dead or Alive Tournament Executive Committee (DOATEC).

After Kasumi fights her way and manages to reach the final round, she faces against Raidou and defeats him, but then he reawakens more powerful than before.

That same night, Fame Douglas is assassinated by Bayman with a sniper rifle under the orders of DOATEC's scientist, Victor Donovan, who desires to gain control of the committee to perform genetic projects.

To everyone on board the cruise ship, she announces the "second DOA tournament", with herself participating as a competitor, determined to find the truth about the murder of her parents.

As the facility burns down, Ryu saves Kasumi and takes her to safety, while Lisa and Alpha make their escape with Hayate and place him in one of the helicopters, which gets hit and crashes.

In the forest, Ryu and Irene learn that Hayate was experimented on in genetics research in the facility and Kasumi runs off to find him.

Ryu, along with Irene, explain to Hayate that Genra may have been involved with DOATEC, and although Ayane returns to normal, both Kasumi and Alpha disappear.

Kasumi spends some time in the geisha district of Kyoto during her running and disguised herself as a normal high school girl and civilian to get by.

Later, Hayate and Ayane come across xinyi liuhequan master Gen Fu, who is giving his apprentice, Eliot, rigorous training.

Gen Fu then asks the two ninjas for a friendly tag duel so that his apprentice can experience different fighting styles.

With the "fourth tournament" on the way, Hayate and the forces of the Mugen Tenshin clan are planning an assault on DOATEC's main headquarters, the Tri-Tower.

Fearing the worst, Kasumi finds her brother and tries to convince him not to start a war, but the plea falls on deaf ears.

After finding out the truth, Helena sets off the building's self-destruction and plans to end her own life, with Kasumi and Ayane helplessly watching from afar.

[14] It was also the first game in the series to have a "Teen" rating from the ESRB since 2001's Dead or Alive 3 by toning down the sexual content for female characters.

To avoid possible legal issues, Nintendo's long time Scandinavian distributor Bergsala decided against releasing Dead or Alive: Dimensions in Sweden, Norway, and Denmark.

[15] The concerns were raised when an internet forum user commented that three underage characters in the game could be viewed from angles that could be considered lascivious.

[23] Nintendo Power review praised the "top-notch" cutscenes and the "fast and furious as ever" gameplay, but warned against the 3D effect, as well as having problems with the Tag Mode feature.

[26] According to VideoGamer.com, "the Street Pass feature is nice and the controls work well, but the framerate suffers online, and the Chronicle Mode is a narrative mess.

"[27] GameZone opined that "loads of modes, plenty of unlockable extra goodies, and a very functional multiplayer make Dimensions a series that not only fans must buy, but any gamer with even the slightest itch for a quality portable fighting game.