A fanfiction where the characters are in a modern and usually more domestic setting. It can be a Non-Indicative Name as some works are set in a modern or even futuristic setting, but a modern AU will set it contemporary to the writing. Modern AUs also usually remove the fantastic elements, though some keep them. Modern AUs are one of the most common Alternate Universes in fanfiction, being a fanfic equivalent of a Setting Update.
Most writers create these stories is because they find it easier to write than actually use the works setting. Instead of having to keep researching its lore and keeping its general world building, writers will base the story off of a more familiar setting. Some writers will occasionally model it off of their own experiences. These kinds of stories are heavily commonly used by shippers.
Artists also tend to use this trope as well. Often taking a character or two and draw what kind of societal archetype they'll be.
- Stolen Ice is a modern AU that still features Elemental Powers. Anna and Elsa are two sisters who were separated after being orphaned. They meet years later, now both criminals, and accidentally fall in love.
- Café Liégeois is a modern au with elements of a Coffee Shop AU Fic and College AU mixed in. Anna is a college student working at Starbucks when she has a Meet Cute with a blind woman named Elsa. Most of the fic isn't related to school or Starbucks.
- /r9k/Elsa Is Suffering is a modern au where Elsa is a Hikikomori who falls for her sister.
- In A Snowflake In Spring Anna visits her brother Hans in a modern-day asylum. While there, she meets the 'Ice Queen' Elsa and eventually falls for her.
- In Apartment 743, Anna and her sister Elsa are fashion models in modern-day New York. The plot starts when Anna meets a homeless man named Kristoff.
- Bjorgman Family Christmas Party and its sister fic Hot Chocolate, Zambonis, and Ice Skates are two Kristoff/Anna fics set in the modern day. The first fic starts with Kristoff taking his girlfriend to a Christmas party at his family's.
- One example of a Star Wars modern AU would be The Boy Next Door and its sequel The Girl From Harvard. The two stories center around the relationship between Anakin Skywalker and Padme Amidala in a modern setting as college students who were formerly neighbors. Instead of dealing with the pressures of war and secret romance, Anakin and Padme must deal with the problems of a long-distance relationship. The story also does contain some twists as well.
- Harry Potter is set in the 1990s, but the infamous fan fic My Immortal makes it take place "now" i.e. The Oughties.
- The Love Club is a modern The Wicked Years fic where Glinda moves next door the future Eminent Thropp, Elphaba Thropp. Instead of being set on Earth, it's set in a modern version of Oz and features multiple Ozian elements (including Animals).
- The first Warrior Cats book came out in 2003. Word of God is that Warriors Redux takes place in the 2010s.
- The Legend of Zelda: Exoria is a different take on this. It's a modern, Urban Fantasy interpretation on the Zelda series that keeps the fantastical elements. Exoria takes place in Hyrule, however it's a contemporary equivalent of Hyrule, instead of the series permanently being stuck in a Medieval Stasis. Link is still the Hero of Hyrule but now deals with a 21st century-like society.
- Sonic Adventure 2 came out in 2001. The Echoes Of Eternity adaptation has it occuring 10 years later in 2011 (but it was written in 2018).
- Do You Believe In Fairies? is based off Harvest Moon: Animal Parade, a 2008 game, but began in 2016 and updated it accordingly. It modernized the work in general. Castanet is closer to a real world American small-town than the Retro Universe Arcadia it is in the games.