Yesh. I finished one arc of a story line with a partner once. 

Hope that counts.

It took months & that was relatively fast because we collaborated via skype/google docs every.single.day for hours on end--& also by the help of alcoholic beverages. Actually, when we drank it turned out incomprehensible so we’d have to start over a bit but I digress. 

I had a fucking blast & was hyped when it was all said & done.

It was engaging, the ending was suspenseful, & we had planned on the story lasting years.

Learned that it takes a partner you can shoot the shit with to bounce ideas back and forth. Be open, honest, and just have fun.