The Most Popular Undertale AU, Ranked

Choose the Undertale AU you think is the most popular!

Author: Gregor Krambs
Updated on Apr 25, 2024 06:52
In the world of video games, particularly those that have captured the hearts of many like Undertale, alternate universes often emerge from the creativity and enthusiasm of the community. These variations keep the original spirit alive while adding unique twists and perspectives that enhance the original story. Having a method to rank these creations can guide new and veteran fans alike toward experiences that best match their interests or introduce them to unexpected favorites. This ranking system taps into collective opinions, leveraging the votes of numerous fans to shape an authoritative list of popular Undertale AUs. By participating in voting, users directly influence the list, ensuring that it reflects current preferences and trends within the community. Such a dynamic ranking not only celebrates the creativity ingrained within the Undertale fandom but also helps to connect more people to the AUs that resonate most with the audience.

What Is the Most Popular Undertale AU?

  1. 1
    63
    votes
    In this AU, characters swap places with their counterparts, resulting in different personalities and relationships. It's one of the oldest and most well-known AUs in the fandom.
    Underswap is a popular fan-made alternate universe (AU) based on the indie role-playing game Undertale. In this AU, the roles of the characters are swapped, resulting in different personalities and interactions between them. It is known for its vibrant and lighthearted atmosphere compared to the original game.
    • Character Swaps: The main characteristic of Underswap is the swapping of character roles. For example, Sans takes the place of Papyrus, Toriel takes the place of Asgore, and vice versa.
    • Colorful Designs: Underswap features bright and colorful character designs, giving a cheerful and playful tone to the AU.
    • Positive Character Traits: The swapped characters in Underswap usually have more positive and optimistic personalities compared to their counterparts in the original Undertale.
    • Reversed Relationships: Underswap often depicts reversed relationships between characters, such as Papyrus being the older brother taking care of Sans.
    • Light-Hearted Storyline: Underswap presents a generally lighter and more comedic storyline, focusing on humorous interactions and situations.
  2. 2
    63
    votes
    This AU is known for its darker and edgier take on the original game, with characters serving as villains instead of heroes.
    Underfell is an alternate universe (AU) of the popular video game Undertale, created by the community. It presents a darker and more violent version of the Undertale world, where characters have opposite personalities and alignments compared to their original counterparts.
    • World Design: The world of Underfell is portrayed as a brutal and harsh place, with a bleak and desolate environment.
    • Character Personalities: Characters in Underfell have changed personalities, typically making them more aggressive, ruthless, and hostile compared to their Undertale counterparts.
    • Visual Aesthetics: The AU features a distinct red color palette to represent the darker tone, with characters often depicted with a more edgy appearance.
    • Storyline Alterations: Underfell offers a modified narrative, exploring the consequences of a world where kindness is viewed as a weakness.
    • Role Reversals: Underfell implements role reversals for characters, with previously helpful ones now taking on antagonistic roles.
  3. 3
    36
    votes
    In this AU, the setting is changed to outer space, and the characters take on a sci-fi theme.
  4. 4
    25
    votes
    Similar to Underswap, this AU swaps characters, but with a darker and more violent twist.
    Swapfell is an alternate universe (AU) in the Undertale fandom, known for its darker and more brutal tone. It takes the main characters of Undertale and swaps their personalities and roles, creating a morally gray and hostile environment.
    • Character Swaps: All characters have switched roles and personalities.
    • Dark Atmosphere: The AU has a darker and more violent mood compared to the original undertale.
    • Hostile Environment: The characters are more ruthless and antagonistic towards each other.
    • Desaturated Color Palette: The art often features a desaturated color palette, reflecting the grim atmosphere.
    • Alternate Storyline: Swapfell introduces a different storyline with altered events and character interactions.
  5. 5
    38
    votes
    Although not technically an AU, Deltarune is a game created by Undertale's creator, Toby Fox, that takes place in a different universe with similar characters. It's gained a lot of popularity among Undertale fans.
    Deltarune is an Undertale alternate universe or AU that serves as a spiritual successor to the original game. It takes place in a different world with new characters and a separate story, while still retaining some connections to the Undertale universe.
    • Release Date: October 31, 2018
    • Platforms: Microsoft Windows, macOS, PlayStation 4, Nintendo Switch
    • Game Engine: GameMaker Studio 2
    • Genre: Role-playing game
    • Art Style: Pixel art
  6. 6
    31
    votes
    This AU is known for its horror themes, with characters being turned into monsters and the setting being a twisted, dark version of the original game.
    Horrortale is an Undertale AU (Alternate Universe) known for its dark and eerie atmosphere. It takes the concept of Undertale to a more horror-filled setting, where the characters and their actions are twisted and sinister.
    • Theme: Horror
    • Setting: Dark and eerie
    • Characters: Twisted and sinister versions of original Undertale characters
    • Storyline: Deviates from the original Undertale plot with a darker narrative
    • Visuals: Gory and unsettling artwork
  7. 7
    18
    votes
    Like Underswap, this AU swaps characters, but also changes the story's plot and events.
    Storyshift is an Undertale alternate universe (AU) that follows a similar storyline to the original game but with a major twist. In this AU, the roles of the characters are shifted, thus changing their behavior, motivations, and overall personalities. The AU brings forth a fresh perspective on the Undertale story, offering an exciting and unique gameplay experience.
    • Shifted Characters: Each character's role and personality are swapped with another from the original game.
    • Player Choices: Players can make decisions that will affect the narrative and character interactions.
    • Multiple Endings: The game features various possible outcomes depending on player choices and actions.
    • Sprite Redesigns: The characters' sprites have been redesigned to reflect their shifted roles.
    • New Dialogue: The dialogue and interactions between characters have been rewritten to match their shifted roles.
  8. 8
    2
    votes
    This controversial AU takes a more sexualized approach to the characters, with a focus on romantic relationships and erotic content.
    Underlust is a popular Undertale Alternate Universe (AU) known for its mature and risqué themes. It presents a more provocative and flirtatious take on the original Undertale characters, with a strong emphasis on romantic and sexual interactions.
    • Focus: Romantic and sexual interactions
    • Themes: Mature, risqué
    • Characters: Based on Undertale characters
    • Art style: Colorful and provocative
    • Popularity: Widely recognized within the Undertale fandom
  9. 9
    21
    votes
    In this AU, the characters are all Grim Reapers, and the story takes place in a world where humans and monsters coexist.
    Reapertale is an Undertale AU that takes place in a darker and more apocalyptic setting. It follows the story of the original Undertale but with a twist, where all the characters have been transformed into Grim Reapers or reaper-like beings. The world is filled with despair and decay, and the characters are caught in an eternal struggle between life and death.
    • Themes: Apocalypse, despair, life and death
    • Main Characters: Sans, Papyrus, Toriel, Asgore, Frisk, Chara
    • Character Transformations: Grim Reapers
    • Storyline: Similar to original Undertale but in a darker setting
    • Atmosphere: Gloomy, somber, eerie
  10. 10
    22
    votes
    This popular fan-made series takes place in a glitchy version of the original game's world, with new characters and a darker storyline.
    Glitchtale is a popular Undertale AU that is known for its intense and action-packed storyline. It takes place in an alternate timeline where Frisk, the protagonist, has fallen into the Underground once again, but this time, they are faced with new challenges and a mysterious entity known as the Glitch. The AU features a unique blend of storytelling, animation, and music, creating a dynamic and engaging experience for fans.
    • First Episode Release: May 31, 2016
    • Animation Style: 2D animation
    • YouTube Channel: Camila Cuevas
    • Number of Episodes: 12
    • Total Runtime: Approximately 3 hours

Missing your favorite Undertale AU?

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Ranking factors for popular Undertale AU

  1. Overall Fan Engagement
    The popularity of an AU can be determined by the level of fan engagement it receives on social media platforms such as Twitter, Tumblr, DeviantArt, Instagram, and Reddit.
  2. Fan Art Creation
    The number of fan art pieces (drawings, paintings, gifs, animations) created based on the AU and shared on social media can be a good indicator of how popular the AU is.
  3. Fan Fiction Creation
    The amount of fan fiction works based on the AU written and shared on various fan fiction websites such as AO3, Wattpad, and Fanfiction.net is another crucial factor in determining its popularity.
  4. Cosplay Engagement
    The number of fans who cosplay characters from the AU at events and conventions can be used as an indicator of popularity.
  5. Views and Subscribers
    Popular Undertale AU YouTube channels with high levels of views and subscribers could also be taken into account.
  6. Influence on the Fandom
    Lastly, the impact that the AU has had on the larger Undertale fan community can also be a critical factor in its popularity and influence within the fandom.

About this ranking

This is a community-based ranking of the most popular Undertale AU. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or Undertale AU is missing, feel free to help improve the ranking!

Statistics

  • 4801 views
  • 168 votes
  • 10 ranked items

Voting Rules

A participant may cast an up or down vote for each Undertale AU once every 24 hours. The rank of each Undertale AU is then calculated from the weighted sum of all up and down votes.

Categories

More information on most popular undertale au

Undertale, the critically acclaimed indie game, has spawned a vast array of Alternate Universes (AUs) created by fans. These AUs reimagine the game's characters and storylines in unique and creative ways, leading to a massive community of fans and followers. While there are countless Undertale AUs out there, some have gained more popularity than others. In this article, we'll take a look at the most popular Undertale AUs and explore what makes them so beloved by fans.

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