this is nicked from everyone, though the first person i saw do it was vaysh.

go to your ao3 statistics page and sort by year, then by kudos. list the top kudosed fic per year.

my ao3 account only goes back to 2010 and there's only one fic for that year. (there are fics i never migrated to ao3.)

also, because this post crossed my dash again, I thought I'd look at the kudos to hits ratio so I've included that as well. according to the marketing professionals in the linked, anything better than a 1:30 engagement ratio is a smashing hit but that fandom frequently sees 1:10 rates (something business can only dream of?). anyway, I was curious to see what my ratios are.

2010
We'll Live Forever - 1:15
Remus/Sirius, 25,5k

2011
Wherein Scorpius ascertains his sexuality - 1:16
Albus/Scorpius, 8k

2012
How to become a superhero - 1:15
Tony Stark & Bruce Wayne, Tony/Steve, 7k

2013
I'll Tell You A Secret (Just Don't Tell) - 1:16
Harry/Draco, 18k

2014
Broken Dicks and Bloody Noses - 1:18
Steve/Bucky, 13k

2015
Don't Blame Me (It Was All a Blur Last Night) - 1:12
Harry/Draco, 19k

2016
The Three Golden Tears - 1:13
Harry/Draco, 13,6k

2017 (nb: this is an odd year as I only had rarepair or small fandom fics)
Of Gilded Wallpaper and Meddling Dragons - 1:6
Laurence/Tharkay, 5k

2018
Little Deaths - 1:15
Harry/Draco, 96k

2019 (nb: I only have two fics posted so far this year)
Anthony J Crowley Fell - 1:5
Crowley/Aziraphale, 1,2k

( more ratio stats under the cut )