Super Neptunia RPG (Brave Neptune: World & Universe! Pay Attention!! Ultimate RPG Declaration! in Japan) is traditional side-scrolling RPG developed by Artisan Studios, and published by Idea Factory and Compile Heart. It is the eighth spinoff of the Neptunia series and sixteenth game overall. The game was released on December 20, 2018 in Japan, and on June 20, 2019 in North America, for the Nintendo Switch, PlayStation 4, as well as PC (via Steam) for the latter.

The goddesses all wake up in a two-dimensional Gamindustri with no memory other than their names. They soon learn that the world has been taken over by an organization called Bombyx Mori, who are forcing the citizens to create 2D games while banning 3D and VR ones. Neptune, with her sense of heroism, sets off on a journey to save the two-dimensional world.

Super Neptunia RPG contains examples of:

• Actually Four Mooks: Enemies will always just show up as one (and always as a Dogoo no matter what enemy it actually is) in the overworld, but there are often more when you fight them.
• Adaptational Costume Change: This version of Histoire wears a different dress that covers her shoulders and long sleeves that covers her entire arms and slits along her skirt that expose her thighs, and dons a purple headwear instead of a hat.
• Amnesiac God: Neptune, Noire, Blanc, and Vert all suffer from this and don't remember anything but their names.
  Neptune: Again with the amnesia, huh? What? No, I do not think it's cliché!
• Amnesiac Hero: Neptune labels herself as a "Hero". After regaining her memories, her title becomes "Hero Goddess".
• Assist Character: Puddingo, a pudding-shaped Dogoo, joins the party during the Lowee chapter, which Neptune can summon and jump off its head to reach greater heights.
• Berserk Button:
  • The act of burning books and destroying video games is an unforgivable crime to Blanc and Vert respectively.
  • Noire does not like the idea of having her memories tampered with. She nearly snaps when Chrome reveals that she turned the Goddesses into humans and sealed their memories so they could survive, with her anger focused entirely on the latter.
• Breaking Old Trends:
  • Unlike previous games, RPG discards the usual 3D gameplay for a more traditional RPG experience with 2D platforming.
  • RPG is the first game to be made by a third-party developer, the French-Canadian studio Artisan Studios, while Idea Factory and Compile Heart serve as their publishers.
  • RPG has the lowest amount of playable characters in the entire series at just 5 (8 with the DLC): the Goddesses and Chrome (and IF, Compa, and Artisan with DLC).
  • This version of Gamindustri lacks its typical futuristic appearance and adopts a more fantasy look, which is especially notable in Lastation and Leanbox.
  • RPG marks the first time where Arfoire, or at least an (implied) Alternate Self of her True Ending Re;Birth1 counterpart via Chrome, is both a good guy and a playable character.
  • Noire's intelligence stat is much higher than her strength and she uses the Magic Formation, making her more of a Magic Knight.
• The Bus Came Back: Ever since being Demoted to Extra in numerous spinoffs, IF and Compa are given slightly bigger roles in directly aiding the heroes and the Resistance, and have returned to playable status (albeit as DLC characters).
• Call-Back:
  • A Bombyx Mori soldier considers that the Three Musketeers should be called Gold Third instead.
  • Young IF and Compa are shown in a photo album.
• Can't Drop the Hero: When exploring the overworld, Neptune can't be swapped out.
• Catchphrase:
  • The spell that the heroes learn from Histoire's tome: "Nep Team Epic!"
  • The password to open Bombyx Mori's base: "hehe Chromey-kins xoxo". Neptune eventually gets Chrome to say it, much to her embarrassment.
• Cosmic Retcon: Before the events of the game, Filyn did a Curb-Stomp Battle to the Goddesses. They all woke up as an Amnesiac Hero and likewise nobody remembers the existences of Goddesses.
• Damsel in Distress: Noire gets captured by Bombyx Mori in the Lowee chapter. Her captors initially mistakes her for a spy, and one CG depicts her Bound and Gagged.
• Dishing Out Dirt: The Terra skill and ores allow you to do earth based damage.
• Ditching the Dub Names: Just like in Superdimension Neptune Vs Sega Hard Girls, "CPU" is dropped for the original term "Goddess".
• Exact Words:
  • Chrome instructs the Resistance engineers to "make a 3D game where people could play with me." What do they end up making? A dating sim featuring Chrome!
  • Paix, who reveals herself to be the Big Bad and becomes a three-headed dragon, offers "half the world" to the heroes. That half being a Blank Black Void to trap them for all eternity.
• Heal It With Fire: Some enemies can have the ability to absorb fire damage taken. With this extending to other damage types depending on the enemy's Resistances.
• Heroes Prefer Swords: Neptune and Noire both use one, but Neptune stands out more for seeing herself as the hero of the story.
• Hopeless Boss Fight: Happens in the Lowee chapter where Blanc and Neptune are forced to fight the Three Musketeers, three top agents of the Bombyx Mori, who have 999,999 health each and instakill the party.
• Karma Houdini: Despite all of the monstrously evil things she does, Paix ends the game being on good terms with the protagonists after Defeat Means Friendship, with little to no indication that she has actually redeemed herself aside from being subjected to continue working with a reformed Bombyx Mori to continue making 2D games.
• MacGuffin: Chrome tasks the heroes to gather seven of Histoire's tomes which are scattered all over the world in order to read the tome proper. Subverted in that these don't actually do anything but grant an achievement, lampshaded as "Unnecessary?"
• Mental Time Travel: Histoire grants this ability to the person who tears her tome. Neptune uses this to escape being defeated by Filyn, as does Chrome in the Bad Ending. Chrome is also implied to have hit the Reset Button multiple times.
• Mythology Gag: An old folktale says that Planeptune City was sunk by their very own goddess in her wrath after her citizens lost faith in her. There is also a statue that depicts Purple Heart as a mermaid.
• Medium Awareness:
  • With this being a Neptunia game, it comes to no surprise Neptune is often commenting on RPG and game tropes she comes across. Artura also leans into this just as much, occasionally referring herself as a difficulty level.
  • The overarching plot is also framed as a conflict between 2D games (this one) versus 3D (the rest of the series) and VR (VIIR).
• Nebulous Evil Organization: The Bombyx Mori at first just seem to be a local organization in Lastation, but it becomes readily apparent over time that they control much of the world and are definitely up to no good.
• Non-Elemental: The Might and Omni Might skills deals non-elemental damage.
• Obviously Evil: The Bombyx Mori are an organization full of Malevolent Masked Men that Neptune is tricked into joining for snacks.
• Playing with Fire: There are certain skills and items that do fire damage.
• Welcome to Corneria: Invoked. When the party arrives at Leanbox Harbor seeking the Resistance against Bombyx Mori, they are greeted by a woman who says "Hello. Welcome to Leanbox Harbor." Neptune comments that she has a hunch that if she talks to her again, she'll just say the same thing. Despite this, she decides to press her luck anyway and, sure enough...
  Woman: Hello there! Welcome to Leanbox Harbor.