I don't know how many tens or even hundreds of thousands of words of #Undertale fiction I wrote in the burst of creativity that came with finishing the game. (Most of it is here: http://archiveofourown.org/users/Monophylos/works) Not all the stories reached endings but I did finish a few that I'm proud of, most particularly "Crouching Toriel, Hidden Cougar", during the writing of which I completely fell in love with Toriel as I did not _quite_ fall in love when playing the game itself. That _should_ have been a big hint to me, had I the wits to notice it.
But another vital thing happened during this time: @kel emerged.