I asked this question nearly 6 months ago, so let's here what the new people have to say!

I'll go first!

My Current WIP Arc: 
Jin-Roh: The Wolf Brigade but the rebels have six Kung Fu robots, and the soldiers have a Death Star.

It's theatrical   

Lucid Wrote: It's theatrical   

That might actually be the shortest and poorest description yet!

It's about a person and some other people.

Story 1: Tiny dragons! 🐲

Story 2: Evil unicorns! 🦄

Harry Potter spinoff. Fakemon series. Sailor Moon sequel.

A group of barely connected characters doing cool stuff on a dieselpunk world. Also dragons.

Heist.

The villain wants a shiny rock. Four protags want to get the shiny rock before the villain. The shiny rock wants none of this. 

The current arc in "A second, [glitched] chance": A lesbian couple and a guy who is just in it for the sweet, sweet XP go on a trip to the capital to deliver documents which they don't even have (but remember).

The current arc in "The integration of the desert planet Tsanh": A giant scorpion received a quest by the System to teach other giant scorpions how to protect their settlements, unaware that another group of people makes their way to Tsanh to start a System Integration. But, I hear you ask, doesn't Tsanh already have a system? To that, dear reader, I would like to point to my signature. 

The Butterfly Effect: Unrelated people doing somewhat related things.

The Twins of Masylm: Check title, all the info you need is right there. 

Songbird: He's the hero. Again.

Death's Consort: Has to kill prince, but kinda wants to *beep* prince 

Summon Slime: Don't trust shifty goddesses offering magic swords.

Crimson Visage: "Why am I red?"

VINES:
(Vol 1) Superheroes die. Repeatedly.
(Vol 2) A dude gets a cold, thus endangering the city.

Revenge!!

Cat-squirrel taur improves her world.

lesbian vampire and demon lady deals with the consequences of bad parenting.

Arc:  A very big spaceship.

Flying from point A to B to C...