Series included in DD are (debuting series are rendered in bold):
- Armored Trooper VOTOMS
- Aura Battler Dunbine
- New Story of Aura Battler Dunbine (After Part 8 Update)
- Blue Comet SPT Layzner
- Code Geass: Lelouch of the Rebellion
- Devilman (original manga version)
- Full Metal Panic!
- Getter Robo: Armageddon
- The King of Braves GaoGaiGar
- Kotetsu Jeeg
- Mobile Suit Gundam 00
- Mobile Suit Gundam: Char's Counterattack
- Mobile Suit Gundam: Iron-Blooded Orphans
- Mobile Suit Gundam SEED
- Mobile Suit Gundam Unicorn
- Mobile Suit Zeta Gundam
- Rebuild of Evangelion
- Evangelion: 1.0 You Are (Not) Alone
- Evangelion: 2.0 You Can (Not) Advance
- Super Electromagnetic Robot Combattler V
- Super Electromagnetic Machine Voltes V
- Valvrave the Liberator
Series included in the World 5 Update
- Martian Successor Nadesico: The Prince of Darkness
- Daitarn 3
- Mobile Suit Gundam Wing: Endless Waltz
- UFO Robo Grendizer
- Aldnoah ZERO
The story revolve around the MART team led by Meguru Daimon with her mecha Grafdin and assisted with four fellow MART pilots, Sakimi Kanmaki, Yunna Dowson, Linaria Quo, Maiko Koutari, riding customized Merafdin units. During an investigation in Antarctica, they came across a humongous ship named Eltsard and along with it, a mysterious sentient giant/cyborg known as Didarion, and it also attracted similar beings named Angilon and Mabilon. During the crossfire, a portal opens up, separating Meguru with her other teammates, leaving her with just one, and stumbling upon one of the many parallel worlds present, where they came across Didarion's human form, an amnesiac boy called Dido. From there, Meguru must work with Dido to uncover his mysterious past, reunite with her friends and find out why Angilon and Mabilon are really hot on Didarion's trails.
Latter updates revealed that the transportation didn't affect just Meguru's team. Back in her home, another fellow Merafdin pilot, Eunice Airy, found herself transported to another parallel world where she cooperated with various heroes to make due and find out what's going on, until her path crosses with Dido and Meguru.
Unlike the preceding Super Robot Wars X-Ω, it plays closer to the main series' Turn-Based Strategy formula. However, unlike traditional installments, allied and enemy units' turn order is decided by a unit's speed, making DD the first title to eschew the allied and enemy phases during turns. As opposed to many other gacha games (including Super Robot Wars X-Ω itself), you spend gacha resources (referred as D-Crystal) to obtain a mecha's attacks instead of using them to obtain the characters, you will automatically get the characters as you proceed through the story. It's basically a hybrid of a traditional Super Robot Wars story, combined with gacha mechanics.
The mecha's attacks are categorized with:
- Impact: Attacks that involve blunt object smashing or using a mecha's own limbs, the purest of physical attack.
- Sword: Attacks that involve using slashing using steel weaponry (though this also includes Beam Sabers).
- Bullet: Attacks that involve shooting with guns or even missiles.
- Beam: Attacks that involve using beam weaponry, mostly found in Real Robot style units
- Specials: Attacks that cannot be categorized in any of the above or combining those traits. Common cases include the many many Chest Blaster attacks from Super Robot style units (Breast Fire, Breast Burn, Antigravity Storm) or Fin Funnels
Each of these attacks were categorized into three levels of rarities (R, SR, SSR) and possess extra perks when put as an equipment piece or set as a main finisher, which can only be used after a few turns and had only limited uses. Latter updates would allow a unit to equip up to 3 finishers, but only one can be considered the main finisher and grants benefits.
Super Robot Wars DD provides the following tropes:
- Adaptational Badass: While Mazinger Z is no slouch, this game gives it the Jet Scrander, which it never had in the Mazinkaiser Original Video Animation as Mazinger Z is defeated within five minutes of the first episode.
- Alternate Universe: Continuing the trend started by Super Robot Wars Z, the game's cast do not come from the same world, instead being split across multiple parallel universes. Were it not for the dimension mishaps occurring, they never would've met each other.
- Artificial Stupidity: When setting the game to "Auto", be wary that allied AI might do something stupid like using a big-damage skill towards an enemy that's about to have a sliver of Hit Points remaining.
- Back-to-Back Badasses: As Original Generation Mooks bombard the protagonist mecha (or at least try to), two of them (the Barbatos and Valvrave I) spin around together then break off to slice enemies with their katanas.
- Early-Bird Cameo: The second Crossing Pilots event lets the player control Suzaku Kururugi in Lancelot and C.C piloting Gawain solo. before any notions of them being in the roster is considered. Likewise, V.V appears as the boss of the event, but with Face Framed in Shadow.
- Evil Counterpart: Evil is kind of stretching it, but the Crossing Pilots event has Lelouch pilot a Gundam with the Shinkiro's color scheme.Lelouch: That Schneizel. He actually managed to reproduce it!
- Guest Fighter: The game has a special set of maps to which players can use the cubes acquired from there to acquire pilots from Super Robot Wars Original Generation, all that has no bearing to the actual DD plot. The available guests are as follows:
- Post-Script Season:
- By the time World 2's story really gets underway, the plot of Zeta Gundam has already ended off-screen, with a combined Char's Counterattack and Gundam Unicorn plot taking the stage.
- In a reversal of T's situation, Shion and Silkie were transported to the current World 1 immediately after the final battle of the Dunbine OVA, leading them to participate in the events of the Dunbine TV series.
- Power Up Letdown: Subverted. When you get 'upgrade' units like Shin Getter Robo or Freedom Gundam, you can only choose one mecha for its respective pilots (Ryouma or Kira). But they don't come with any exclusive SSR skills, you have to get them via gacha first. Therefore, the new upgrade tends to look weaker than the original units (Black Getter or Strike Gundam), and it will stay that way... until you get lucky in gacha and obtain their SSR skills, in which you have to spend resources for them too to make them actually worthy of being called 'upgrade'.
- Protagonist Power-Up Privileges: SSR skills are mostly given to a series' main protagonists. Out of the Original Generation, only Dido and Meguru have SSR skills, while the supporting Grafdin pilots max out at the SR-level. That was during the initial build, over time, Bandai Namco Entertainment have started giving out SSR skills to non-protagonists (Tetsuya Tsurugi, Rei Ayanami and Asuka Langley Shikinami, Melissa Mao, for instance), the first amongst the aforementioned supporting Grafdin pilots being Yunna Dowson.
- The Remnant: Members of the Titans, including Jerid Messa, have survived the Gryps Conflict, and are looking to get to Laplace's Box before it can potentially do harm to The Federation. Of course, since that requires getting the Unicorn Gundam, they get into a conflict with Londo Bell.
- Revisiting the Roots:
- The return of a CG opening featuring some of the cast's robots, a staple of the franchise that stopped after the Third Super Robot Wars Z: Tengoku-hen.
- This game is the first Super Robot Wars title with traditional game-play to include a 1970s series outside of the "Invincible Trilogy" since Super Robot Wars L. Furthermore, it is the first traditional installment to feature a debut '70s series since 2003, when Kotetsu Jeeg, Combining Squadron Mechander Robo, and Future Robo Daltanious made their respective debuts in Super Robot Wars Alpha 2, Super Robot Wars Compact 3 and Super Robot Wars Destiny.
- DD is the first game since Super Robot Wars W to utilize only the original Gundam SEED as the representative of the "Cosmic Era" narrative instead of mixing it with or going straight to Mobile Suit Gundam SEED Destiny
- Sampling: A minor example that just quotes the lyrics - "Dimension Drive" by JAM Project in the first promotional video begins with the phrase "Raise your flag", in the game where Iron Blooded Orphans makes its series debut.
- Shared Universe: While the original characters live in their own isolated world, the licensed cast are divided as such:
- "World 1" consists of the casts of Devilman, Steel Jeeg, Mazinkaiser, Combattler, and Dunbine. New Story is also listed here, though the actual situation is unknown.
- "World 2" features the casts of Voltes, Zeta Gundam, Char's Counterattack, Gundam Unicorn, Getter Robo Armageddon, GaoGaiGar, and Rebuild of Evangelion.
- "World 3", despite the name, is actually two separate worlds, one consisting of the Full Metal Panic and Gundam SEED casts, and another featuring Gundam 00 and Code Geass.
- "World 4" has the casts of Votoms, Layzner, Valvrave, and Iron-Blooded Orphans. Zegapain, however, is its own separate universe, despite being grouped in with these four.
- "World 5" is another case of two separate worlds being grouped together: on one side is Grendizer, Daitarn, and Aldnoah; on the other is Endless Waltz and The Prince of Darkness.
- Spared by the Adaptation: Despite the Gryps Conflict having occurred off-screen, Four Murasame is alive and well, fighting alongside Kamille Bidan in her Psyco Gundam for Londo Bell. Likewise, Jerid is still around alongside some The Remnant of the Titans.
- Trapped in Another World: The plot of DD features characters getting sent whisked away to other worlds, forcing them to try and find a way home alongside others in the same situation.