Potterfests

Fest Name: Blackcest Fest 2026
Links: Tumblr | Timeline | Rules | Character Eligibility | Claiming
Type of Challenge: Anonymous prompt fest
Description: A fest featuring works which depict a sexual or romantic relationship between two or more members of the Black family. See Eligibility Details for a list of eligible characters for this fest. AI use (including using AI to edit a work) is not allowed. Claiming is open till February 28.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 1,000 words; no maximum
Art: Must demonstrate approximmately 2 hours worth of effort (no single sketches or doodles)
Podfic: Required permission from the original author
Timeline:
Prompting: November 24 - December 7
Claiming Opens: December 10
Claiming Closes: February 28, 2026
Submissions Due: March 8
Posting Begins: March 16
Author Reveals: TBA

Fest Name: Dorlene Big Bang 2026
Links: Tumblr | Rules | Schedule | Sign-up
Type of Challenge: Big bang
Description: A Dorcas Meadows/Marlene McKinnon big bang. Writers will write a fic, and artists will create art based on the fic they claimed. Sign-up for writers and betas are open till January 31. Artist sign-up is open till April 15.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 20k words
Art: One piece of original art and one banner per fic
Timeline:
Sign ups open - December 1, 2025
Writer & beta sign ups close - January 31, 2026
Fic summaries due - March 31, 2026
Artist sign ups close - April 15, 2026
Artist claiming - May 1, 2026
First draft due - May 31, 2026
Final draft due - June 30, 2026
Art due - July 7, 2026
Posting begins - July 15, 2026

Fest Name: Accio Sapphics
Links: Tumblr | Rules | Request a Bingo Card
Type of Challenge: Bingo Events
Description: A bingo event dedicated to sapphic HP ships. Sign up to request a personalised bingo card. Sign-up will remain open indefinitely.
Ratings Restrictions: All ratings allowed
Length Restrictions: Minimum 500 words; no maximum
Timeline:
Request a bingo card: December 1 - indefinitely

Fest Name: Blimey Hermione!
Origin: Hag Fest Collection (Tumblr, Instagram)
Links: AO3 & Rules | Tumblr Announcement | Claiming
Type of Challenge: Anonymous prompt fest
Description: A Harry/Hermione fluff fest with happily-ever-after endings. AI is not allowed. Claiming is open till February 6.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 1k; no maximum
Art: 1 piece per prompt
Timeline:
Prompts Go Live: December 1, 2025
Claiming: December 1 - February 6
Assignments Due: February 7
Voting Begins: February 8, 2026
Awards Given: February 13, 2026
Fics Go Live: February 14, 2026

Fest Name: drarryharry100 Christmas Challenge 2025
Origin: dracoharry100 | dracoharry100
Links: Rules & Prompts
Type of Challenge: Prompt challenge
Description: A Draco/Harry December prompt challenge run by dracoharry100 on Dreamwidth and Livejournal. The challenge will run from December 1 to December 31.
Ratings Restrictions: All ratings allowed
Length Restrictions: None; welcomes fic and art
Timeline: December 1 - 31

Fest Name: Yuletide (After Dark): A Smutty Marauder's Holiday Fest
Origin: The Marauder's Pen Tumblr (Linktree)
Links: AO3 | Rules | Announcement | Claim a Prompt
Type of Challenge: Non-anonymous prompt fest
Description: A Marauders-era characters smut fic fest inspired by winter holiday classic tunes. The use of generative AI is not allowed. Each prompt can be claimed twice. Claiming is open on AO3 till December 31?
Ratings Restrictions: All ratings allowed
Length Restrictions: Minimum 1000 words; no maximum
Timeline:
Claiming: November 24 - December 31
Stories due: December 31
Stories revealed: January 3
Stories spotlights begin: January 4

Fest Name: Moonchaser Fest 2026
Links: Tumblr | Rules | Claiming
Type of Challenge: Anonymous prompt fest
Description: A James/Remus fic and art fest. The use of AI-powered software for your submission is not allowed. Claiming is open till February 20.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 1000 words; no maximum
Art: None?
Timeline:
Prompting: November 10th - November 23rd
Claiming: November 24th - February 20th
Works Due: February 22nd
Posting: March 3rd
Reveals: a week after posting is completed

Fest Name: Black Brothers Fest 2025-2026
Links: Tumblr | Discord | AO3 | Rules | Prompting
Type of Challenge: Anonymous prompt fest
Description: A fest exploring the relationship between the Black brothers, Sirius and Regulus. Prompting is open till December 15.
Ratings Restrictions: All ratings allowed
Length Restrictions:
Fic: Minimum 1,000 words; no maximum
Art: Minimum clean lineart or coloured sketch of one character (bust-up) on unlined paper (or digital equivalent)
Podfic: Minimum 10 minutes of podding a previously written work or minimum 500 words of written fic with an accompanying podfic of the same fic
Timeline:
Tagset Nominations & Prompting Open: November 15
Claiming Opens: November 30
Nominations and Prompting Close: December 15
Claiming Closes: December 31
Works Due: February 28, 11:59 PM EDT
Works Revealed: starting April 1
Creators Revealed: two weeks after all works go live.

Fest Name: Horcruxmas Fest 2025
Links: AO3 & Rules
Type of Challenge: Anonymous theme fest
Description: A Tom|Voldemort/Hermione fest featuring at least one of the original Horcruxes. Works must be original with no assistance from generative AI. Works are due on December 23.
Ratings Restrictions: All ratings allowed
Length Restrictions: Between 750 - 10,000 words
Timeline:
Fest Announcement: November 1
Fics Due: December 23 at 11:59PM Eastern US Time
Fics Revealed: December 24
Authors Revealed: December 31
Hosts Will Share Fics Across Socials: January 1st - ?