If you've speedrun anything that could conceivably be "unofficial" content, including but not limited to fangames, mods, romhacks, custom maps, user levels, or randomizers, we'd love to have you!
Just a week away!
IWBTG fangames are still about 38% by runtime (probably by submissions too), but there's always a lot of other games' custom maps and romhacks:
I'm participating for the first time this year! I'm really excited!!!